-84.79% is the change from 539 to 82
Calculation steps:
[( 82 - 539 ) ÷ 539] x 100 = -84.79%
Formula
Percentage change = [(82 - 539) / 539] x 100
Subtract the new number by the original number
82 - 539 = -457
-457 ÷ 539 = -0.8478664192949907
-0.8478664192949907 x 100 = -84.79%