Hello Aspirant,
See the category and percentage which you have mentioned in the question, you have no chance to get any of the colleges for B.Com (//B.Com) . course under Delhi University because the cut-off for General category usually goes higher and this year it was around 88% for General category.
So if you want to get in to any college of Delhi University for B.Com (//B.Com) . then you should have at least 90% in class 12th to be on the safer side of getting a seat.
Note that the above prediction is made on the basis of latest cut-offs till round 6th and the cut-offs are bound to change every year depending upon various factors such as the number of candidates appearing in an examination, the number of candidates qualifying an examination, difficulty level of the paper, and so on.
You can also check out all the cut-offs from the link given below :-
https://university.careers360.com/articles/du-cutoff
I hope this information helps you.
Good Luck!!
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