Hello!Vikas.

Rank and cuttoff score hasn't declared yet by NTA.Percentile score makes prediction tough as it only gives relative performance of candidates in their respective session.I can give you rough idea about rank in general quota using this formula:{100-percentile score}×874469/100,where 874469 is total aspirants that appeared in 1st phase of jee mains .Your rank will be around 85.3k.With this rank under general quota it will tough to get any NITs.As only around 40k seats are available in total NITs.You still have one attempt for jee mains 2019.You are close to NITs ,this time secure seat in NITs.You can.

GOOD LUCK!

Hello Vikas. Thanks for connecting with Careers360. I would like to tell you that the April session of JEE Mains is yet to take place in the month of April. The percentiles will be revised after that as the number of students will increase. The cutoffs for NITs and many other colleges will be released after April. So you have to wait till April to know the cutoffs. However for your reference, I am sharing a link woth you which consists of previous year NITs cutoffs. 

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

Hope this answer helps you. Good luck.