Hello Devanti,

Percentages vary for different colleges ,they have different criteria.But on an average it depends on the subject ,which subject your taking like if you want to Hons in english,then your aggregate marks must be 60% atleast and 70% in english subject.For political science it is upto 50% aggregate marks.At minimum level you need to have an aggregate marks of 60% in 12th board for any college.

I hope it helped. Feel free to ask any other queries in comment section.