-28.07% is the change from 456 to 328
Calculation steps:
[( 328 - 456 ) ÷ 456] x 100 = -28.07%
Formula
Percentage change = [(328 - 456) / 456] x 100
Subtract the new number by the original number
328 - 456 = -128
-128 ÷ 456 = -0.2807017543859649
-0.2807017543859649 x 100 = -28.07%