The percentage decrease based in the information given is 25%.
- Number of students that got A grade in first exam = 16
- Number of students that got A grade in second exam = 12
- Reduction in the numbers = 16 - 12 = 4
Therefore, the percentage decrease will be:
= 4/16 × 100
= 1/4 × 100
= 25%
The percentage decrease based in the information given is 25%.
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