Question

The new number, 200, is 400 less than the original number. What is the approximate percent change

Answer 1

The answer is 66%. Sorry if it is wrong.

Answer 2

first, what was the original number?

it was 200+400=1000!

and when we want to know the change in percent, we divide the "new" number over the "original" number: and we'll know that percentage of the original the new number is!:


`(200)/(1000) *100%= (2)/(10) *100%=(200)/(10) %=20%.`

so the percent change was 80 %: the original number was reduced by (100-20)=80 %