Good evening

Hope you are absolutely fine, as per your query. 85 marks are considered as an average marks for JEE Mains. it is hard to tell exact percentile because

Percentile = 100 x (Number of candidates who secured a raw score (or actual score) equal to or less than the candidate)/(Total number of candidates who appeared in that session).

So, you expected percentile would be in the range of 90.0448455 -91.79177119 and rank would be 109329-90144.

Predict your JEE Main 2022 percentile by using JEE Main rank Predictor checkout given link below:

Hope you found it helpful
All the best!!!