-11.31% is the change from 981 to 870
Calculation steps:
[( 870 - 981 ) ÷ 981] x 100 = -11.31%
Formula
Percentage change = [(870 - 981) / 981] x 100
Subtract the new number by the original number
870 - 981 = -111
-111 ÷ 981 = -0.11314984709480122
-0.11314984709480122 x 100 = -11.31%