Hello Vijay

Greetings

Your percentile is 70.16 It means 70.16% student of the Total student appeared for the Exam are Behind You Therefore 29.84% students of the Total students appeared for the exam are Ahead of You, Therefore Your calculated Approximate rank is 260942

 But Note that this rank is Not the Final rank Your  Rank will change Because It depends on Performance of You and Others in the JEE Main April, And the final Rank would be calculated Based on comparing Final percentile ( Whichever is Higher in Both the attempts if any) of all the students

Your rank is Not Good and You should Try in the Next attempt of JEE Main which is JEE Main April and Try to perform well, THe actual cutoff will be released once JEE Main April Gets over

 At this rank It is Not possible to get admission into any NIT, Since there are only around thirty Thousand seats in NIT and at this rank it is Not possible to get any seat Under open category for other categories we can not make any prediction without Knowing the ranks.  Please try better in the next attempt of JEE Main

 You should Try to get more than 98 percentile for NIT

Hope this Helps All the Best