First you would want to find the original price. to do this you need to find the multiple.
1) start with 100
if it's an increase, add
if it's a decrease, subtract
in this case we want to add to find the original price.
100 +33.33%= 133.33
then divide by 100
= 1.33
this is the multiplier
$66 x 1.33= $87.78
$87.78 -$66 = $21.78
So the answer to the question is $21.78
Hope this helped Xx
