Hello dear student ,we would love to help you with your query but your student it is really unpredictable to calculate percentile as percentile can go anywhere around it depends upon number of factors 1 is how much is the maximum score. So it's is hard to predict percentile and I hope you understand this. why if you belong from general category even from reserved category student don't worry you will qualify JEE mains as you have scored enough good marks .

Best wishes