-24.71% is the change from 870 to 655
Calculation steps:
[( 655 - 870 ) ÷ 870] x 100 = -24.71%
Formula
Percentage change = [(655 - 870) / 870] x 100
Subtract the new number by the original number
655 - 870 = -215
-215 ÷ 870 = -0.2471264367816092
-0.2471264367816092 x 100 = -24.71%