Hey there!

Well it is not possible to tell whether you will get a seat corresponding to any percentile because the admission is totally based on rank of student and closing rank for a particular branch of the college.

and these stuffs are depends on various factors like:

1- Difficulty level of exam

2- Number of seat available in institutes

3- Category of student

4- Relative marking

and many more, but we can get a rough idea of closing rank of colleges an all by analyzing previous year trends and data related to the admission.

With 80 percentile in JEE Mains, your All India rank would be anywhere in between 204600 - 230000 and your OBC category rank would be in between 50000 to 60000 as per JEE Mains rank predictor tool

https://engineering.careers360.com/jee-main-rank-predictor

According to previous year trends of maximum closing rank at VNIT, Nagpur for OBC category students is around 15000 to 20000.

Hence you have a bit low chance for getting admission in VNIT, you can also check some previous year closing rank of various branches in VNIT by clicking here https://engineering.careers360.com/articles/jee-main-cutoff-for-vnit-nagpur

If you wish to know about the colleges in which you may get admission corresponding to your score, click on the link given below for using JEE Mains college predictor tool

https://engineering.careers360.com/jee-main-college-predictor

I hope this info will be useful!