-9.1% is the change from 967 to 879
Calculation steps:
[( 879 - 967 ) ÷ 967] x 100 = -9.1%
Formula
Percentage change = [(879 - 967) / 967] x 100
Subtract the new number by the original number
879 - 967 = -88
-88 ÷ 967 = -0.09100310237849017
-0.09100310237849017 x 100 = -9.1%