-86.32% is the change from 936 to 128
Calculation steps:
[( 128 - 936 ) ÷ 936] x 100 = -86.32%
Formula
Percentage change = [(128 - 936) / 936] x 100
Subtract the new number by the original number
128 - 936 = -808
-808 ÷ 936 = -0.8632478632478633
-0.8632478632478633 x 100 = -86.32%