-53.01% is the change from 83 to 39
Calculation steps:
[( 39 - 83 ) ÷ 83] x 100 = -53.01%
Formula
Percentage change = [(39 - 83) / 83] x 100
Subtract the new number by the original number
39 - 83 = -44
-44 ÷ 83 = -0.5301204819277109
-0.5301204819277109 x 100 = -53.01%