-25% is the change from 128 to 96
Calculation steps:
[( 96 - 128 ) ÷ 128] x 100 = -25%
Formula
Percentage change = [(96 - 128) / 128] x 100
Subtract the new number by the original number
96 - 128 = -32
-32 ÷ 128 = -0.25
-0.25 x 100 = -25%
Example