Here's the question you clicked on:
nikolaytk
find the percent change from 24 to 72. tell whether is it a persent increase or decrease
Well, since 72 is just about three times 24, it would seem to be about 300% of 24. That indicates a 200% increase.
No sweat. Do math every day.
if you want a formula for it \[\Large \frac{\text{final value} - \text{initial value}}{\text{initial value}}\]