-74.25% is the change from 870 to 224
Calculation steps:
[( 224 - 870 ) ÷ 870] x 100 = -74.25%
Formula
Percentage change = [(224 - 870) / 870] x 100
Subtract the new number by the original number
224 - 870 = -646
-646 ÷ 870 = -0.7425287356321839
-0.7425287356321839 x 100 = -74.25%