Hello Rohit

There are many colleges where you can get admission if you got 80-85 percentile in CAT.

I am mentioning some best college where you can go with this score-

• SP Jain Institute Of Research And Management,Mumbai
• Xavier Institute Of Management And Entrepreneurship,Bangalore
• Institute Of Financial And International Management,Bangalore
• Institute Of Management Studies,Banaras Hindu University,Varanasi
• Institute Of Financial Management And Research,Changambakkam

Here's the top 5 college where you can get admission if you varies between 80-85 percentile,also you can check more information about some other colleges 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

Good Luck For Your Future!