-96.88% is the change from 128 to 4
Calculation steps:
[( 4 - 128 ) ÷ 128] x 100 = -96.88%
Formula
Percentage change = [(4 - 128) / 128] x 100
Subtract the new number by the original number
4 - 128 = -124
-124 ÷ 128 = -0.96875
-0.96875 x 100 = -96.88%