Hey Mayank,
First of all, you need to calculate your percentage taking into consideration your best four subjects marks. It should include one language subject compulsarily. Also, avoid adding your optional subject like (physical education) in your best four as it may lead to a deduction of 2.5% from your total percentage. It will be a plus point for you if you have Computer science as your 10+2 subject.
I would like to inform you that though your overall percentage is quite low to get admission in general category, but there are various quota given by DU if you are eligible for that. To check about the same further, do visit the official site of DU.
I hope that helps!:)
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