Khushi, you haven't mentioned your Category. Nevertheless, we have DU 8th merit list for 2019. . And going by that with 81%, you might have a chance in Aditi Mhavidyala, Aryabatta College, Bhagini Nivedita College and  Dr. Bhimrao Ambedkar Degree College. Now this is 2019 data and cut offs change every year. So while with 81% you might not get a seat in the first 6 Merit lists but yes either in the 7th or 8th merit list, you might get a seat in B.Com (//B.Com) . You can also check the 7th merit list at: http://du.ac.in/adm2019/pdf/Cutoff/Seventh/05082019_Arts%20&%20Commerce.pdf