Hey Shiva! 

You have decent marks throughout your past academic journey. So, if you have above 96 percentile, you can very easily make into the new IIMs. But, if you are aiming for IIMABCIL, then you need more than 98 percentile. So, work hard, rather try to score as much as possible. As, it will be reduce the doubt of entry altogether to these best B-schools. Prepare well and ace it. Best wishes! 

Hey 

For getting into any IIMs you must focus on your CAT score first try achieving above 95 percentile and you may get into an IIM . However your graduation and school academic performance doesn't matter much regardless if your aiming for IIMs like Ahemdabad Bangalore and calcutta where your academic s performance matters a lot

Based on your academics you have dccent chances to get shortlisted in IIM's but some IIM's strongly consider past academics while others may have a criteria but its not a strict matter.

To get into top IIMs you should aim scoring above 99.6 percentile along with good performance in other selection rounds like GD/PI/WAT etc..

Apart from IIM's you can also consider admission in Delhi University-FMSwhich takes through CAT exam, past academic records are not an important consideration.

Also you can give other management exams like MAT, XAT, CMAT, NMAT etc.

Top IIM's admission criteria you can check below:

IIM A admission process

IIM B admission process

IIM C admission process

Hope this helps.

Good Luck!