The cutoff can't be exactly predicted as they change from year to year and depend on various factors like number of candidates appearing and also the paper difficulty, etc. As per the last year's analysis, NIT PATNA will have a closing cutoff around 99.98 percentile. For some branches like CSE and IT is will go as high as 99.99 percentile and other branches will have close to a range of 99.9....

Check the cutoffs for each branch in detail over here..

https://engineering.careers360.com/articles/jee-main-cutoff-for-nit-patna

Best wishes. Thank you.