Hello Rohit

You forgot to mention your Academics score and job profile (if any).But I am gonna tell you the name of colleges where you can get admission at 80+ percentile in CAT with average academics score.

So here is the list of top 10 colleges-

1. NIT Trichy.
2. Delhi School Of Management,Delhi Technical University,New Delhi.
3. Loyola Institute Of Business Administration,Chennai.
4. Indian Institute Of Information,Technology and Management,Gwalior.
5. Birla Institute Of Technology,Mesra.
6. NIT Rourkela.
7. NIT Durgapur.
8. Alliance School Of Business,Bangalore.
9. Institute Of Finance And International Management,Bangalore.
10. Institute OF Rural Management,Anand.

There are some other colleges from where you have a moderate probability of getting chance,you can check them out here https://bschool.careers360.com/articles/what-if-my-cat-percentile-between-80-and-90-do-i-have-any-chance-at-top-b-schools

Hope this Helps

Best Of Luck!!