You can know about the normalisation procedure of marks and percentile from the article link below:-

https://www.google.com/amp/s/engineering.careers360.com/articles/jee-main-normalisation-process-how-scores-are-calculated/amp

Here you can get the formulas to calculate your marks.

The marks cannot be obtained with the information of percentile as percentile calculation considers various factors under it. 

I suggest you to wait for the officials to announce the marks of JEE Mains.

If you have any other query do mention it down in the comment section.