Dear Student

98.67 are pretty good percentile but you can't predict the exact rank, however you can get an expected rank using this formula.

100 - your total percentile score is the percentage of people ahead of you. 869010 are the number of candidates who appeared for the exam. So the formula is (100 - your total score) X 869010 /100 . If the number of candidates for exam in April incremented to 1200000 then your final rank will be (100 - your total score) X 1200000/100

By my estimate your rank should be in the region of 15-16000 .