The cut off percentage of du varies with course ( the honours subject you choose like history, geography, political science etc) and with your caste category. It also depends on your caste category and the college you choose.

It can be illustrated as, if you want political science or sociology and you belong to general category and you want the top colleges then the cut off can go as high as 98 and in case if reserved category , there can be a relaxation of 5 to 6 percentage. Apart from this there would be several cut off lists relased, so you can wait for your turn. Officially there is a provision of 5 cut off lists and if the sits are not filled , there can be more. The minimum percentage required to get into a du College for ba hons can be around 66 to 70 percentage of you choose sanskrit or hindi honours, or if you go to south campus. Otherwise percentage around 92 93 will surely make you secure college , to whichever category you belong....

If you want further details, please specify the course and your category.

All the best :)