CAT

Appear for more entrance tests like CMAT MAT NMAT etc. Many good B-Schools prefers best of the scores. Your scope would widen.

A good percentile would be close to 70 for admission to a good institute, but then candidate profile matters after the initial screening as the weightage to CAT percentile is not more that 12percentile by most of the B-Schools. Finance and Banking is a good choice but if he has a technical bend of mind then he can look at FINTECH as an option from a B-School recognized by AICTE. Analysts are the best paid these days and FINTECH would give him that edge.

It is very easy. Just apply to them. They will send you a call letter.

If you are aiming top B- schools, then its 95+%.
On an average, if you somehow manage to score 80%-90% also, there are many good colleges which you can go for.

To Target SP Jain College, your score must be above 97 percentile at least if your college is not IIT NIT. They won't call below that unless your profile is exciting for them.

Graduation with 50% or above can easily apply for CAT exam. All the best.

If not CAT, then go for ATMA XAT MH-CET, CMAT TISS (if you are an engineering).

It all depends on your preparation. If you are well prepared, practiced a lot, then you will be able to crack CAT (not easily, but yes you can, by putting a little bit of effort).

For graduation courses, candidates who have appeared for 10+2 exam are also eligible. The qualifying marks for SEBC candidates from the state of Kerala is 55% in aggregate and minimum 50% marks in mathematics as well. An overall 50% marks in aggregate is required apply for CUSAT CAT. For more details related to CUSAT CAT, visit the below Shiksha link:
https://www.shiksha.com/university/cochin-university-of-science-and-technology/cusat-cat-exam
Hope this helps you. Be free to share any problem if you have. Good luck!

Well, with this, you can go for:
ABBA-Bangalore
AIMS-Bangalore
Christ-Bangalore
Welingkar-Mumbai.