-25.17% is the change from 878 to 657
Calculation steps:
[( 657 - 878 ) ÷ 878] x 100 = -25.17%
Formula
Percentage change = [(657 - 878) / 878] x 100
Subtract the new number by the original number
657 - 878 = -221
-221 ÷ 878 = -0.2517084282460137
-0.2517084282460137 x 100 = -25.17%