A percent grade of 73 corresponds to a C letter grade. A % grade must fall within the range of 73 to 76 in order to be regarded a C; however, this may vary amongst institutions.
A 2.0 grade point average is equivalent to a letter grade of C. A student must also get a percent grade of 77 to 79 to receive a grade point average of 2.3, which is equivalent to a C+. A student must achieve a percent grade of 70 to 72 to receive a grade point average of 1.7, which is equivalent to a C-.