I'm sorry to inform but marks cannot be estimated on the basis of the percentile obtained because calculation of percentile is based on many factors. 

The marks will be announced by National Testing Agency by the end of this month. 

If you still have any queries feel free to ask in the comment section down below. 

Hello Shivyamganesh.. no one can predict the 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 2,08,610.

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, you may or may not be eligible for jee advanced as it is expected rank.

i would suggest you to prepare well and write april jee mains well. best of the two exams will be considered.

Hope this helps you. All the best