Hello Aspirant,

Here both conditions are possible if you can get marks 324 in jee mains then it is the percentage and percentile is more than 90 and if you can get 61-70 marks then it is possible that you can get percentile in between 90 so here you can decide based on your marks.

Also you can predict your college based on your jee mains marks:-

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

Hope this information helps you.

Best of luck!!