Hello Pankaj

We can't say the actual qualifying percentile in JEE mains 2019 because as you know there are 2 attempts for JEE mains,1st held in January and the 2nd one would be in april so after april attempt only NTA will publish the rank list and Cutt off list .So please wait till april.

According to our team they have predicted that above 85 percentile will qualify for JEE advance,but it just a prediction so you have to wait till april end.

I hope you get my point

Thank You and GOOD LUCK!!!