-16.55% is the change from 870 to 726
Calculation steps:
[( 726 - 870 ) ÷ 870] x 100 = -16.55%
Formula
Percentage change = [(726 - 870) / 870] x 100
Subtract the new number by the original number
726 - 870 = -144
-144 ÷ 870 = -0.16551724137931034
-0.16551724137931034 x 100 = -16.55%