-10.49% is the change from 972 to 870
Calculation steps:
[( 870 - 972 ) ÷ 972] x 100 = -10.49%
Formula
Percentage change = [(870 - 972) / 972] x 100
Subtract the new number by the original number
870 - 972 = -102
-102 ÷ 972 = -0.10493827160493827
-0.10493827160493827 x 100 = -10.49%