CAT

Your percentile is quite decent. With such scores you have following options-
Great lakes
IMT Ghaziabad
Tapmi
GIM
BIM, Trichy

With 80 percentile in CAT General category, don't rush for MBA, get work ex and re-appear for CAT.

Minimum qualifying CAT 2018 overall percentile is 80. Minimum qualifying CAT 2018 sectional percentile in each of the 3 sections is 70. Above 90% marks in Class 10th will get you to top rating of 10 (Rating score A) irrespective of your stream. Top rating of 10 (Rating score B) for Class 12th will vary.

There are many colleges such as Amity, Sharda, etc.

The CAT percentile above 90 can suffice for UBSC if you belong to general category, Because higher weightage is given to CAT percentile in the selection process. Hence your chances are moderate here. It is a very competitive exam.

Hi! Hope your doing well by the way, MBA is a good decision you can join in Management Quota without writing any Exam in MBA colleges particularly Private Universities.
Here are Some Top MBA College
1.Acharya B School
2.Symbiosis Institute of Business School
3.Alliance University
Let me guide you through Indian Education Services (IES) Top Education Consultancy in India where the students are given complete guidance from career counseling to admission guidance without any stress or tension connect with them
Give them a try, I am sure you won't regret Good Luck!

https://www.shiksha.com/mba/cat-college-predictor
Here is the tool which you can use to predict your chances.

Hi,MDI-Gurgaon does not declare the admission cut off scores. However, going by the past trends MDI Gurgaon may have cut-offs between 93 and 95 percentile in CAT 2019 for admission 2020. Good luck.

Hi,
80+ Percentile in CAT is preferred there, and also good academic records with a minimum of 50%. If your dream is to take admission in ISM Dhanbad, then you require a minimum 80-85 percentile in CAT. Good luck.