Take the
(original price - new price)/original price
then multiply by 100
If it is a positive number, it is a decrease.
If it is a negative number, it is an increase.
original price: $63.00
new price: $56.07
11% decrease
original price: $12.25
new price: $13.23
8% increase
original price: $98.00
new price: $108.78
11% increase
original price: $37.50
new price: $34.50
8% decrease
