-9.85% is the change from 975 to 879
Calculation steps:
[( 879 - 975 ) ÷ 975] x 100 = -9.85%
Formula
Percentage change = [(879 - 975) / 975] x 100
Subtract the new number by the original number
879 - 975 = -96
-96 ÷ 975 = -0.09846153846153846
-0.09846153846153846 x 100 = -9.85%