Hello!
"Decrease" means to take away, so subtraction would be used here.
We must find out 15% of 240 is, and to do that we will convert the percentage to a decimal by dividing by 100, and then multiply the decimal by 240.
^ I know, that's probably a lot to take in at once! :D
15% ÷ 100 = 0.15
240 × 0.15 = 36
Now that we know what 15% is, we must subtract it:
240 - 36 = 204
Final Answer:
204 is the total amount after a 15% decrease.
