-14.71% is the change from 870 to 742
Calculation steps:
[( 742 - 870 ) ÷ 870] x 100 = -14.71%
Formula
Percentage change = [(742 - 870) / 870] x 100
Subtract the new number by the original number
742 - 870 = -128
-128 ÷ 870 = -0.1471264367816092
-0.1471264367816092 x 100 = -14.71%