-73.33% is the change from 870 to 232
Calculation steps:
[( 232 - 870 ) ÷ 870] x 100 = -73.33%
Formula
Percentage change = [(232 - 870) / 870] x 100
Subtract the new number by the original number
232 - 870 = -638
-638 ÷ 870 = -0.7333333333333333
-0.7333333333333333 x 100 = -73.33%