On the first math exam, 16 students received an a grade. on the second math exam, 12 students received an a grade. what percentage decrease is that?

25%

Step-by-step explanation:

So, first, you need to subtract 16 by 12, 16-12, which should be 4. after that step, you need to divide 4 by the actual number of students. that should be 16 students. so now, you should get .25, but then to get the percentage, you need to move the decimal point two spaces to the right, or multiply it by 100. then you get 25%.

PSST!! put this in your notes for math, if you want for tests!