-11.49% is the change from 879 to 778
Calculation steps:
[( 778 - 879 ) ÷ 879] x 100 = -11.49%
Formula
Percentage change = [(778 - 879) / 879] x 100
Subtract the new number by the original number
778 - 879 = -101
-101 ÷ 879 = -0.1149032992036405
-0.1149032992036405 x 100 = -11.49%