-52.44% is the change from 82 to 39
Calculation steps:
[( 39 - 82 ) ÷ 82] x 100 = -52.44%
Formula
Percentage change = [(39 - 82) / 82] x 100
Subtract the new number by the original number
39 - 82 = -43
-43 ÷ 82 = -0.524390243902439
-0.524390243902439 x 100 = -52.44%