Hi

Your best performance/percentile is considered out of all the 4 sessions.

So,

If 86.6 percentile is your maximum percentile out of all the 4 sessions then it will be considered and thus it will be used for giving you rank and thus the counselling/admission process .

If I tell you about rank then,

It's difficult to predict as percentile vs rank in JEE main depends upon a number of factors like

• number of students that appeared in the  jee main exam,

• kind of marks obtained by them ,

• toughness level of the jee main examination for different shift etc.

  Recommended

But yes,

with  86.6 percentile

• your rank will be around 137082 - 154100 as per our rank predictor at

  JEE Main Rank Predictor 2021 - Predict your JEE Main ...

  JEE Main Rank Predictor - Know your expected IIT JEE Main 2021 Rank by ...

To get the complete list of colleges which you can get on the basis of the category you belong to,  your home state, your gender etc, the link for  jee main college predictor is provided below

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

To help you further,

To give you an idea of qualifying cut off, JEE mains 2020  qualifying  CUT OFF percentile  is given below for different category

>>>> General :-     90.3765335

>>>> GEN-EWS :-  70.2435518

>>>> OBC-NCL :-  72.8887969

>>>> SC     :-           50.1760245

>>>> ST :-                39.0696101

>>>> PwD :-            0.0618524

You can check the same at our page the link is provided below

https://engineering.careers360.com/articles/jee-main-cutoff

Thankyou