Abhimanyu, 

If your percentile is 88 then your score would be around 90. And based upon this score you will definitely qualify for JEE ADVANCED 

And based upon results of our career 360 predictor you have qualified for jee advanced 2019. You may check yourself at

https://engineering.careers360.com/jee-main-rank-predictor

Hello dear, 

According to your percentile in jee mains your general rank will be approximately close to 1,10,000.With this rank you will able to qualify jee mains to become eligible for jee advanced also it is expected that the cutoff percentile for general category will be 85.So you have the chances to qualify.