As per the official website their is no minimum percentage said for getting admission in Bachelor of Computer Application (BCA) in CM college, Darbhanga.The only criteria for 12th grade is that the candidate should have passed a 12th examination of the Bihar School Examination Board or an equivalent examination from any other recognized Board. You can copy paste and visit the below official college website link for knowing the admission criteria in detail http://cmclnmu.ac.in/index.php/admission-2/