-11.26% is the change from 879 to 780
Calculation steps:
[( 780 - 879 ) ÷ 879] x 100 = -11.26%
Formula
Percentage change = [(780 - 879) / 879] x 100
Subtract the new number by the original number
780 - 879 = -99
-99 ÷ 879 = -0.11262798634812286
-0.11262798634812286 x 100 = -11.26%