Hi, there since you have got 76 percentile in JEE Mains OBC category it seems that your category rank will range in between 100K-150K and let me tell you that on this rank it difficult to get into NIT. So I personally suggest you to try for any Government Funded college I hope you might get one based on the rank you have obtained. As well as on this rank I can assure you that you can get into any good private instituton. Than also it will be better if you can take admission in any Government institution.

Moreover you can predict your own college by yourself also through Careers360 College Predictor tool(link mentioned below) according to your rank in any category;

https://engineering. careers360.com/jee-main- college-predictor?icn=QnA&ici= qna_answer

Good Luck.