State Whether each percent of change is a percent of increase or a percent of decrease. Then find each percent of change. Round to the nearest whole percent.
original: 10
new: 25
We know it is a increase, but how do we get the percent?

Question

State Whether each percent of change is a percent of increase or a percent of decrease. Then find each percent of change. Round to the nearest whole percent. 
original: 10
new: 25
We know it is a increase, but how do we get the percent?

turingtest · Answer

if something goes from 1 to 2
is this not a 100% increase?

anonymous · Answer

Well, yes. We think so.

turingtest · Answer

and if it goes from 1 to 3 that is a 200% increase...

turingtest · Answer

so the formula is 
(percent change)=(difference in the number)/(original number)
times 100

myininaya · Answer

because 1=100%

anonymous · Answer

Okay so... *thinks* 
If we do, 25-10
Then divide 10
and times that by 100 we would get our answer?
We got 150

turingtest · Answer

yes that seems right :)

turingtest · Answer

150% increase

anonymous · Answer

Okay! ^^
Just one more thing. Would we do the same formula for a decrease too?

turingtest · Answer

yes, just note that in a decrease the numerator will be negative
try it on changing 4 to 2
(2-4)/4X100=(-2/4)X100=-50%
so if you get a negative answer that means "decrease"

anonymous · Answer

That sounds right. Thank you very much ^^!

turingtest · Answer

very welcome