Hello Aspirant,

See it depends upon cut-offs of JEE-Main because the candidates who will clear the JEE-Main cut-off will only be allowed for JEE-Advanced and JEE-Main cut-off is not declared yet because this year exam has been postponed due to COVID-19 Pandemic and now the results and cut-offs are expected to be released by September 10th. However based on previous year's cut-off for JEE-Advance you should have at least 75 percentile or more if you belongs to OBC category.

You can check out the previous year's cut-off from the link given below :-

https://engineering.careers360.com/articles/jee-main-cutoff

Note that cut-offs are bound to change every year depending upon various factors so the marks cannot be predicted for sure.

I hope this information helps you.

Good Luck!!