-10.22% is the change from 969 to 870
Calculation steps:
[( 870 - 969 ) ÷ 969] x 100 = -10.22%
Formula
Percentage change = [(870 - 969) / 969] x 100
Subtract the new number by the original number
870 - 969 = -99
-99 ÷ 969 = -0.1021671826625387
-0.1021671826625387 x 100 = -10.22%