Hello

ACPC rank is  calculated from your gujcet marks.

It is the combination of gujcet and 12 pcm marks. It is calculated from 40% of your percentile of your Gujcet marks and 60%of your percentile of you 12th pcm Marks , whether it is Gseb, icse, cbse..And according to your merit marks you will get your rank

Feelfree to ask

Good Luck...