-72.3% is the change from 870 to 241
Calculation steps:
[( 241 - 870 ) ÷ 870] x 100 = -72.3%
Formula
Percentage change = [(241 - 870) / 870] x 100
Subtract the new number by the original number
241 - 870 = -629
-629 ÷ 870 = -0.7229885057471265
-0.7229885057471265 x 100 = -72.3%