Percentage = (Number of correct answers / Total number of questions) * 100
In this case, the number of correct answers is 23 and the total number of questions is 25.
Percentage = (23 / 25) * 100
= 0.92 * 100
= 92
Therefore, the grade would be 92%.
If we assume that the grading scale is based on the following:
A: 90% and above
B: 80% - 89%
C: 70% - 79%
D: 60% - 69%
F: Below 60%
Based on this scale, a score of 92% would correspond to an A grade.