With the percentile you have provided for JEE MAINS 2021 then you can expect a rank around 480810 - 540500 .  You may expect a seat in new NIT's with these rank. It can be hard but it have some chances.

You can visit the link below for JEE MAINS college predictor:

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

For JEE MAINS Rank predictor you can visit:

I hope this answer helps. All the very best for your future endeavors!