There's no single equivalent number grade for a 2.7 GPA. A GPA is an average of letter grades, and the conversion varies depending on the grading scale used by the school or institution.
A 2.7 GPA generally falls within the C+ to B- range, but the exact numerical equivalent could be anywhere from approximately 77% to 83%. To get a precise equivalent, you'd need to know the specific grading scale used.