-82.53% is the change from 870 to 152
Calculation steps:
[( 152 - 870 ) ÷ 870] x 100 = -82.53%
Formula
Percentage change = [(152 - 870) / 870] x 100
Subtract the new number by the original number
152 - 870 = -718
-718 ÷ 870 = -0.825287356321839
-0.825287356321839 x 100 = -82.53%