Hi Atul Priye !

A big congratulations to you for scoring such a good percentile in JEE MAINS examination (held in the month of January) . Actually there is a 12th percentage criteria for gettng admission in any NIT :- For admissions to NITs/ IIITs/ GFTIs: Candidates need to have secured a minimum 75% marks in class XII or equivalent exam or be in the top 20 percentile in their class XII exam conducted by the respective board. For SC/ ST candidates, theeligibility criteria are to secure 65% marks in classXII or equivalent exam.

Moreover I am also sending you the link for the eligibility criteria for DTU, Delhi :-

https://engineering.careers360.com/articles/jac-delhi-eligibility-criteria