Hello aspirant

Hope you are doing great. For the question you have asked it's really unfair to question the percentile score displayed on your scorecard , since this is not only based on your marks , but there are various other parameters which are taken into account before displaying the percentile score . This parameters includes  the level of difficulty of your paper .The percentile score is totally based on how other students of your shift have performed . So maybe you are not satisfied but the calculation of this score is all done by the computer systems , so yes it is absolutely fair.

I hope my answer helps

All the very best!