dear aspirant,

First of all i would like to congratulate you and yes, if you choose for arts or any other medium(science/ commerce) other than what you had in 12th then 2.5 per cent will be deducted from the total total percentage (in making the total percentage of just the best of 4 subjects will be counted) the deduction that vary from college to college wherever its 3 per cent, 3.5 per cent as well.

all the best!!