-86.61% is the change from 956 to 128
Calculation steps:
[( 128 - 956 ) ÷ 956] x 100 = -86.61%
Formula
Percentage change = [(128 - 956) / 956] x 100
Subtract the new number by the original number
128 - 956 = -828
-828 ÷ 956 = -0.8661087866108786
-0.8661087866108786 x 100 = -86.61%