-69.28% is the change from 879 to 270
Calculation steps:
[( 270 - 879 ) ÷ 879] x 100 = -69.28%
Formula
Percentage change = [(270 - 879) / 879] x 100
Subtract the new number by the original number
270 - 879 = -609
-609 ÷ 879 = -0.6928327645051194
-0.6928327645051194 x 100 = -69.28%