Hello Srinivas,

Percentile is normalised score.It means that 34 percent of the total people who appeared for jee mains 2019 exam have secured marks equal or less than your marks.

All the best.

Hello greetings

34 percentile means that 34% of the total student appeared for the exam have scored less than or equal to you in the JEE main exam of your shift and therefore the rest of the students that is 66% student have scored more than you there for this is your normalised score respective to your shift but as there is many shift in the JEE main exam and each student has a normalised score now all this normalised scores are comfortable and if you know the total number of the students then we can calculate your approximate ranks but this rank will not be final as there is an another JEE main exam which will be held in the month of April and if a student appeared for the both the exams then best of the to normalise score will be counted for the rank calculation  at this score it is not a good  so I think that you should appear for the next exam and perform well in the exam to get something out of it.

Hope this helps all the best