-91.41% is the change from 128 to 11
Calculation steps:
[( 11 - 128 ) ÷ 128] x 100 = -91.41%
Formula
Percentage change = [(11 - 128) / 128] x 100
Subtract the new number by the original number
11 - 128 = -117
-117 ÷ 128 = -0.9140625
-0.9140625 x 100 = -91.41%