Hi TS,

Percentile is always relative with respect to score based on various factors line no. of students appearing for the examination,difficulty level of examination,performance of students.So,I would suggest you to keep practising and focus on your strentgh areas and make sure you do not let go your weak areas much.Also put a bit extra effort towards the end,peddle the accelarator that may help you with a increase of marks.

You never know what a small effort can land you into.All the best.