Dear Aspirant,

You can have a rough idea using these:

You can check official cutoffs (closing ranks ) of all NITs on official JOSAA website:

https://josaa.nic.in/WebInfo/Page/Page?PageId=1&LangId=P

Cutoffs of NITs in past few years:

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

This year's  analysis of marks vs percentile vs rank :

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

NIT WARANGAL CUTOFFS-

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

NIT SURATHKAL CUTOFF-

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

NIT TRICHY CUTOFF -

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

Due to changing trends every year its quite difficult to find exact marks or percentile  for particular branch of particular college, but a from above links and previous trends marks 130-140 + would help .

Hope this helps.