Hi Aspirant,

Hope you are doing great as per the question asked by you to get a seat in N.I.T in any branch in O.B.C category you should score more then 95-96 percentile in J.E.E mains then only you will get a seat in open state quota else if you are having any home state quota then you may expect 1-2 percent less it depends and varys every year.

For more information you can visit the link given below:

https://engineering.careers360.com/articles/jee-main-marks-vs-percentile

Hope you found this answer useful.Stay motivated stay positive.

All the best!