-13.39% is the change from 956 to 828
Calculation steps:
[( 828 - 956 ) ÷ 956] x 100 = -13.39%
Formula
Percentage change = [(828 - 956) / 956] x 100
Subtract the new number by the original number
828 - 956 = -128
-128 ÷ 956 = -0.13389121338912133
-0.13389121338912133 x 100 = -13.39%