How to Calculate Percentage of Marks?

“How to calculate percentage of marks” remains a common question among students seeking to get higher education abroad. To find the percentage of marks, you need to divide the sum of obtained mark(s) by the total maximum mark(s) and then multiple the result by 100 to get a percentage.     

When we receive our marks from any exam, our first step usually becomes calculating the percentage from marks. Finding a percentage is a straightforward way to see how you performed relative to the total possible marks. The common way to calculate the percentage of marks is to divide the total obtained marks by total maximum marks and multiply their result by 100. Here's percentage calculation formula -

Percentage = (Obtained Marks ÷ Total Marks) × 100.

If you are Indian student dreaming of studying abroad then this guide is perfect for you. Just as your CGPA- percentage is universally understood by universities worldwide. Hence converting your marks into percentages is often crucial step when applying to top global institutions in some of best countries for higher education abroad where different grading systems need to be translated clearly.  

Calculating percentage of marks can vary when total marks are 100 or different. Hence in this article we have come up with different formulas to calculate percentage of marks when total marks vary.

What is Percentage?

A percentage refers to a number or ratio that is expressed as a fraction of 100. In other words, percentage represents a part of a whole, where the whole is always considered to be 100. A percentage is represented mathematically by the "%" symbol. In common use, percentage is also sometimes abbreviated as “pct” or “pc”. Let's understand percentage by the following examples -

1.  A 20% off sale means you save ₹20 for every ₹100 of the original price.
2. A 5% annual bank return means you earn ₹5 for every ₹100 you save. 

Formula for Calculating Percentage of Marks

So, are you wondering what is the marks to percentage formula?

Percentage of marks can be calculated by dividing the obtained marks by total marks and then multiplying result by 100. Thus marks to percentage formula comes out to be -

Percentage = (Total Obtained Marks/Total Maximum Marks)x100 

For eg. - if a student scores 25/50 marks on his test then his percentage of marks will be (25/50)x100 = 50%

This formula is suitable for calculations even if you have to calculate marks for just one exam or multiple exams. You just have to add the marks received (total marks) and divide them by the total maximum marks.  

However, there are different formulas to calculate percentage of marks in different scenarios. These are given below. 

How to Calculate Percentage of Marks?

To convert marks into a percentage, divide the marks obtained by the maximum possible marks and multiply the result by 100. If you want to calculate the percentage of a single mark, then divide it by the maximum marks and then multiply the result by 100. If there are multiple marks, then, you need to add all these marks and then add all the maximum marks as well. Then divide the total marks or the "total obtained marks" by the "total maximum marks" then - multiply this by 100. This will give you the percentage of marks either for 1 subject's marks or a set of subjects throughout an examination. If some subjects or exams carry more weight than others, those must be factored into the total accordingly.

To calculate the percentage of marks, you just need to apply one basic formula. For calculating percentage of marks of one subject, you need to divide the obtained marks by the maximum marks for that subject and multiply the result by 100.

If you wish to calculate the percentage of marks for more than 1 subject, then you must add up all the obtained marks and the maximum marks for these subjects separately. Divide the total obtained marks by the total maximum marks and multiply the result by 100.

Step-by-step procedure of calculating Percentage from Marks

Refer to steps given below to calculate percentage from marks- 

1. Add all marks obtained across subjects. 
2. Add maximum marks (M.M.) across these subjects. 
3. Divide total marks obtained by total M.M. 
4. Multiply result by 100 to get percentage. 

You may also like to learn - How to calculate percentage from SGPA?

Examples of Marks to Percentage Calculations - Different Cases

Let us understand how to calculate the percentage of marks in different cases. 

Case 1 - When the Maximum Marks are 100. 

This is the simplest case. Here marks are given out of 100 and the percentage is simply the marks obtained. Percentage of marks formula in this case is Percentage = obtained marks/total marks= obtained marks/100 = (obtained marks)% 

For eg. Rohan scored 74/100 marks and Shilpa scored 95/100 marks in a test. Therefore percentage of marks scored by Rohan and Shilpa is 74% & 95%. 

Case 2. - When the Maximum Marks are not 100 but a multiple of it. 

Calculating the  percentage of marks when the total marks are not 100 sometimes gets tricky. In this case you need to calculate average percentage marks of all subjects. For this add marks obtained in all subjects and divide it with total marks. Then numerator of fraction represents percentage of marks. For example, Rohit secured 540/600 marks in his exams. So we divide both numerator and denominator by 6 to get 100 in denominator i.e. (540÷6)/(600÷6)=90/100=90% therefore Rohit's scored 90% marks in his exams. 

Case 3. When Maximum Marks are Factor of 100 

In similar case as above when  total marks are factor of 100 multiply whole fraction of marks by a number such that denominator becomes 100 or total marks become 100. For example Sanjana receives 16 marks out of total of 25 marks. So fraction of marks that Sanjana obtained is 16/25. Now multiplying the whole fraction by such a number that denominator becomes 100 - (16x4)/(25x4) = 64/100 = 64% 

You may also check the following related articles - 

• How to convert CGPA into Marks for studying abroad? 
• How to Convert GPA to Percentage for Studying Abroad?

How to Calculate Percentage From Marks: Summary

As we have learned all cases of how to find the percentage of marks - we can summarise all three cases below. 

You might also like to read - 

• How to Calculate CGPA for Studying Abroad? 
• How to convert 10 point CGPA to 4 point GPA? 
• How to Calculate SGPA?

How to Calculate Percentage Increase and Decrease?

When quantity or value changes in terms of percentage over period of time- amount of change that occurred can be expressed by percentage change. The formula to calculate change in percentage is given below. 

Percentage Change = (Change in Value/Original Value) x 100 

Therefore- increase and decrease in percentage can be calculated as explained ahead.

How to Calculate an Increase in Percentage? 

A percentage increase is referred to as increase in percentage value of given quantity over period of time. The calculation of percentage increase can be useful when determining change in percentage of large quantities over period of time- such as change in population or change in bacterial growth over period of time. The percentage increase formula is given below.

Percentage Increase = (Increased Value - Original Value)/Original Value x 100 

For example- consider that total population of town has increased from 1500 to 2500 people. Then- calculation of percentage increase in total population of town is shown in image below Percentage Increase = (2500 - 1500) / 1500 x 100 = 66.66% (image representation given below) 

So- above calculation indicates percentage increase in population of town is 66.66%. 

For studying in Germany, you amy also check - Indian Percentage to German GPA Calculator

How to Calculate a Decrease in Percentage? 

A percentage decrease is referred to as decrease in percentage value of given quantity over period of time. The percentage decrease formula is given in image below. Percentage Decrease = (Original Value - Decreased Value)/Original Value x 100 For example- consider that total number of students in school has decreased from 750 to 550. The percentage decrease in total number of students in that school can be calculated as given below. Percentage Decrease = (750 - 550) / 750 x 100 = 26.66% (image representation given below) 

So- above calculation indicates that percentage decrease in total number of students in given school is 26.66%. 

If you're planning to study abroad, it's important to Understand the International Grading for Students 

How to Calculate Weighted Average Percentage from Marks?

To calculate a weighted average percentage from marks, multiply each mark by its assigned weight (as a decimal), sum those products, and then divide by the total sum of weights; if weights are percentages that sum to 100%, you just sum the products. The core formula is (Sum of (Mark × Weight)) / (Sum of Weights), but if weights are decimals adding to 1 (e.g., 0.2, 0.3), the division step is simplified as you divide by 1. 

Here is an example to understand this calculation step-by-step:-

1. List all your marks and weights:- For example, to calculate the weighted percentage of marks for the entire year, the weighted averages of class tests, midterms and final exams are required. Suppose, in class test you scored 90% marks, and its weightage is 20%. In the midterm you scored 85% and it has a weightage of 30% and in the final exam, you scored 92% marks, and the exams have a weughtage of 50%. 
2. Now you have to calculate the weighted scores in each exam:- This includes multiplying marks by their weights in decimal or decimal weight (for example, a weightage of 20% becomes 20/100 = 0.2). This gives us the following weighted marks:
   1. Class tests: 90 x 0.2 = 18 
   2. Midterm exams: 85 x 0.3 = 25.5
   3. Final exams: 92 x 0.5 = 46
3. Adding all the weighted scores: Add all the weighted scores from step 2. This gives us - 18 + 25.5 + 46 = 89.5
4. Add all the weights: 20% + 30% + 50% = 100%
5. Divide (If Needed): If your weights add up to 100% (or 1 as a decimal), your answer from Step 3 is your weighted average. If weights don't add to 100%, divide the sum from Step 3 by the sum from Step 4. 
   • Hence, in this case, the weighted percentage of marks is 89.5%. 

How to Calculate Percentage of Marks in Excel?

Calculating the percentage of marks in excel is very simple by means of a certain formula. If your total marks obtained are in cell A1 and the total maximum marks are in cell B1, then you can use the formula: = (A1/B1)*100 to get the desired percentage.

How to Calculate Marks from Percentage?

We have provided the formula to calculate marks from percentage below in case the students need to verify their marks based on the percentage that they received in the examination. For using this formula to calculate the marks from a percentage, the students must be aware of the total marks.  

Marks = (Percentage of Marks/100)xTotal Marks (image representation given below) 

For eg.- Rohan received 64% marks on his test - which was scored out of total of 25 marks. Thus, marks obtained by Rohan are- 

Marks = (64/100)x25 =16 

Hence Rohan obtained 16 marks on his test. 

Common Mistakes Made in the Calculation of Percentage from Marks

Indian exam patterns feature unique complexities - such as internal assessments, practical exams, varying subject weights and the best-of-five rule.  Due to these, Indian students frequently make specific mistakes when calculating their percentages for study abroad or job applications. Some of those mistakes are indicated here below. 👇

1. Miscalculating Theory vs. Practical Marks: In Indian boards (like CBSE, ISC, or State Boards), subjects like Physics, Chemistry, and Biology are split into Theory (70 marks) and Practicals/Internal Assessments (30 marks). Students often calculate the percentage using only their theory score out of 70, completely forgetting to add the practical marks to both the "obtained" and "total" pools. 
2. Including Marks from "Additional" or 6th Subjects: Many Indian students take a 6th additional subject (such as Physical Education, Informatics Practices, or Fine Arts) to boost their aggregate scores. However, many global admissions teams calculate your percentage based strictly on core academic subjects relevant to the course/program you're applying for.
3. Misinterpreting the "Best of Five" Rule: Students choose their top five highest-scoring subjects to calculate an inflated percentage - completely dropping a core subject (like Mathematics) in which they scored lower.
4. Ignoring Varying Maximum Marks: Since in many Indian college semesters, different subjects carry different maximum marks (e.g., Core papers are out of 100, while elective or environmental papers are out of 50). Many Indian students make a mistake by taking a "simple average" by adding the individual percentages of each subject and dividing by the number of subjects.
5. Mixing Up SGPA and CGPA in Engineering/University Systems: Students mistakenly use their final semester's SGPA to calculate their overall graduation percentage, or they mistakenly take a simple mathematical average of all 8 semesters' SGPAs.

So, this was all about how to find the percentage of marks and how to calculate marks from percentage. In this blog, we also presented the calculation of percentage increase and decrease. Candidates looking for assistance with the university application process can get in touch with our Shiksha Counselling Services on the same. Candidates can write to us with their queries in the comments section below.