-14.51% is the change from 972 to 831
Calculation steps:
[( 831 - 972 ) ÷ 972] x 100 = -14.51%
Formula
Percentage change = [(831 - 972) / 972] x 100
Subtract the new number by the original number
831 - 972 = -141
-141 ÷ 972 = -0.14506172839506173
-0.14506172839506173 x 100 = -14.51%