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.

But Your Percentile will b good and also You can get into very good colleges as You also belong to OBC Category.

Your Percentile based on category is: 99.45 - 99.65

Your Overall Percentile is: 99.04 - 99.24

Your Rank based on category is: 1103 - 2753

Your Predicted Rank is: 6854 - 8504

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

ALL THE BEST :)