Hey,
Well,it's a Big No.
For St .Stephens, you need to score as high as 97 percent or above. St.Stephen is co considered one of the best in the University of Delhi. They first select you based on your marks in 12th,Then conduct an aptitude test and the personal Interview.
Hope this helps.
Good luck.

I don't think so you will admission in st. stephen college with 62% in board ( general).  i think you may get BA program in Deshbandhu college. or you can give entrance exams for some program  like BA in humanities and social science, BBA, BMS.

for more information please DU's official site.