You can't score Your Percentile on the basis of Marks because Percentile depend on a lot of other factors too which are equally important. Because Students are less this time and also Paper Variation also affects a lot. So One can't decide easily the percentile on the basis of marks.

So Let's Wait for the Result and Hope for the Best You will score good.

But You have scored very good marks so your percentile will be very good. You might even get into NITs and IIITs on basis of these marks.

But I will recommend you to check All The Colleges, That is available for You on basis of your rankings and Reservation, Then You can also check that at Our JEE MAINS COLLEGE Predictor. That will be very helpful for You.