Hey kavita,

Du be one of the prestigious university of India and therefore usually keep their percentage high. With 91% you might get some off campus or South campus colleges if you're a general category candidate.  But you might get some good colleges as well in further cutoffs if you're reserved category candidate.

You may predict your college you might get in du at this website 

http://www.university.careers360.com/delhi-university-college-predictor

Also check the cutoffs of previous year to get a clear idea regarding it.

Good luck!