-17.47% is the change from 870 to 718
Calculation steps:
[( 718 - 870 ) ÷ 870] x 100 = -17.47%
Formula
Percentage change = [(718 - 870) / 870] x 100
Subtract the new number by the original number
718 - 870 = -152
-152 ÷ 870 = -0.17471264367816092
-0.17471264367816092 x 100 = -17.47%