I'm a commerce student in class 12 without maths.I'm in SC category.can you tell me the minimum percentage I required in Delhi university ?

The percentage varies college to college as if you are okay with average or below average college then admission can be done in 80% but if you wish to get seat in decent/good college then I would say try to get at least 90% as this score will help you to get admission in good college in first cut off only. So plan and prepare accordingly so that you can seat in your desired college.

For reference, you can go through below provide DU 2017 Cut off college and course wise -

DU First Cut off 2017

Hope this helps!!!

Assuming asking for B.com, You require more than 88% in class 12th to get admission in Delhi University good colleges. To know the cutoff this year of DU you can go through with given below link.

DU cutoff