First of all, DU offers two undergraduate courses in psychology.
1 B.A(Hons) Applied Psychology
2 B.A(Hons) Psychology.
The percentage you need to get an admission into DU for BA (Hons.) in Psychology-
As far as the percentage for admission is concerned, to get into top DU colleges your percentage should be somewhere around 95-96%. The more the percentage the more are the chances of getting into top-ranked colleges affiliated to the university. After the 1st and 2nd cut-off the colleges their doors for the students.
Click to find the cut-off list of 2016-2017 to get a fair idea of the percentage needed.
You can also check out all the cutoffs on university’s official site:-
You should also keep in mind the reservation Quota (of Caste). There is a quota for girls in some colleges. Greater the percentage of marks more are the chances. Since few colleges offer this course the cutoff can be higher. I read a student got an admission with 87% marks. Check out last year cutoffs.
Best of luck!