-43.75% is the change from 128 to 72
Calculation steps:
[( 72 - 128 ) ÷ 128] x 100 = -43.75%
Formula
Percentage change = [(72 - 128) / 128] x 100
Subtract the new number by the original number
72 - 128 = -56
-56 ÷ 128 = -0.4375
-0.4375 x 100 = -43.75%