-12.29% is the change from 879 to 771
Calculation steps:
[( 771 - 879 ) ÷ 879] x 100 = -12.29%
Formula
Percentage change = [(771 - 879) / 879] x 100
Subtract the new number by the original number
771 - 879 = -108
-108 ÷ 879 = -0.12286689419795221
-0.12286689419795221 x 100 = -12.29%