-92.97% is the change from 128 to 9
Calculation steps:
[( 9 - 128 ) ÷ 128] x 100 = -92.97%
Formula
Percentage change = [(9 - 128) / 128] x 100
Subtract the new number by the original number
9 - 128 = -119
-119 ÷ 128 = -0.9296875
-0.9296875 x 100 = -92.97%