-9.29% is the change from 969 to 879
Calculation steps:
[( 879 - 969 ) ÷ 969] x 100 = -9.29%
Formula
Percentage change = [(879 - 969) / 969] x 100
Subtract the new number by the original number
879 - 969 = -90
-90 ÷ 969 = -0.09287925696594428
-0.09287925696594428 x 100 = -9.29%