Hello Ankita Bhatia..we can't predict marks as it is percentile, but we can predict rank.

According to careers360 rank formula, 

Rank formula= [(100-total score) * (no of students wrote exam)] /100

No of students attended are 874469.

So your expected rank will be nearly around 5,15,937.

As per previous year jee mains, any rank below 2,00,000 will be qualified for jee advanced.

So according to expected rank of yours, so you are not eligible for jee advanced.

So don't worry prepare well and write april jee mains well. best of the two exams will be considered.

Many are getting confused with percentile with percentage

percentage= (marks you got*100)/ (total marks)

percentile= (marks you got*100)/(toppers marks in that session).

Hope this helps you. All the best