Dear Rohan, 

The criteria for admission in DU is the best of four percentage i. e. Your total percentage are not considered,  what is taken into account is the best of four subjects percentage. 

B. Sc in computer science includes two courses,  one is the B. Sc Hons. In computer science and the other is B.sc (PMC)  which consist of three core subjects - Physics,  Maths and Computer science.  The value as well as cutoff for B.sc Hons in computer science is more than the B. Sc (PMC)  course. 

Given your percentage,  you surely can grab a seat in DU ( that entirely depends on your best of four marks). A best of four percentage of about 85 is not enough to give you a North campus college but it will definitely give you a South campus college or an off campus college.