-13.68% is the change from 972 to 839
Calculation steps:
[( 839 - 972 ) ÷ 972] x 100 = -13.68%
Formula
Percentage change = [(839 - 972) / 972] x 100
Subtract the new number by the original number
839 - 972 = -133
-133 ÷ 972 = -0.1368312757201646
-0.1368312757201646 x 100 = -13.68%