Hello Aspirant,

Since you have mentioned your percentile here then I would suggest that first calculate your rank through the following link

https://www.entrance360.com/engineering/how-to-calculate-rank-for-jee-mains-2019/

And further I am attaching a link which will give you the links for the previous year cutoffs of the NIT, by visiting this link you will have an idea that from which NIT you can expect a call. 

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

Hope this answers you well. Good Luck.