Respuesta :

apologiabiology
percent change=change/original times 100

change=20-16=4
original=20

change=4/20 times 100=0.2 times 100=20

answer is 20%
RealityCheck
The sweater has a 20% decrease in price. 

Here's the math:
$20 - $16 =$4
$4 / $20 =.2
.2= 20%