Hello Tarang Kheni,

It is better to score 85+ percentile to qualify for the jee advance and this is based on the previous years estimates. so you may have greater chances to qualify for the jee advance exam

meanwhile you can predict your rank and college.

your rank can be predicted using the formula:(100-your total percentile)*869010/100 for jan exam and if the number of candidates increases to 1200000 for april exam then your rank can be (100-your total percentile)*1200000/100.

and you can predict your college using careers360 college predictor:

Hope it helps.

All the best.