-44.53% is the change from 128 to 71
Calculation steps:
[( 71 - 128 ) ÷ 128] x 100 = -44.53%
Formula
Percentage change = [(71 - 128) / 128] x 100
Subtract the new number by the original number
71 - 128 = -57
-57 ÷ 128 = -0.4453125
-0.4453125 x 100 = -44.53%