IIM Calcutta - Indian Institute of Management

Based on your profile you will have to score near perfect CAT score and do extremely well in GDPI to get admission in any of the top IIMs.

That said, the general picture is that Iims prefer a well rounded personality - viz, you have to be excellent in your acads as well as in other co-curricular activities. As you can see from the above a CGPA of less than 6 would fetch you a very low rating. So, its difficult, but not impossible.

Either 75% or Among Top 20 Percentile in Qualifying Exam:
Candidates should have secured either 75% in Qualifying Examination or should be among Top 20 Percentile of respective School Board.For the SC / ST candidates, the minimum marks percentage in Qualifying Examination is 65%.

Data suggests that if you're a candidate with less than 80% marks in class 10th and/or class 12th, and/or less than 60% marks in graduation, chances of you making it to IIM Ahmedabad are significantly lower than the rest of the applicants.

The expected CAT percentile cutoff of IIMs for asked category are given below.
1. IIM-A
Sectional cutoff=60
Overall cutoff= 70
2. IIM-B
Sectional cutoff= 60
Overall cutoff=70
3. IIM Kolkata
Sectional cutoff= 65
Overall cutoff=70

As per your previous marks, chances are less, but still, if you try to score above 98+ in CAT then, maybe you will be callwd as an interview.

Cut off for GC is approx 99.2+ rest depends on a number of students and how they perform in the exam.

Here, if you have score 98+ CAT score, then chances are good to get a call. Rest depends on IIM ends maybe lucky you can get chance to prove yourself. Thanks.

You are having good chances to get admission, attempt the interview, and give your best. Won't worry a lot. All the best for your future.