-10.32% is the change from 979 to 878
Calculation steps:
[( 878 - 979 ) ÷ 979] x 100 = -10.32%
Formula
Percentage change = [(878 - 979) / 979] x 100
Subtract the new number by the original number
878 - 979 = -101
-101 ÷ 979 = -0.10316649642492338
-0.10316649642492338 x 100 = -10.32%