-84.04% is the change from 539 to 86
Calculation steps:
[( 86 - 539 ) ÷ 539] x 100 = -84.04%
Formula
Percentage change = [(86 - 539) / 539] x 100
Subtract the new number by the original number
86 - 539 = -453
-453 ÷ 539 = -0.8404452690166976
-0.8404452690166976 x 100 = -84.04%