-84.42% is the change from 539 to 84
Calculation steps:
[( 84 - 539 ) ÷ 539] x 100 = -84.42%
Formula
Percentage change = [(84 - 539) / 539] x 100
Subtract the new number by the original number
84 - 539 = -455
-455 ÷ 539 = -0.8441558441558441
-0.8441558441558441 x 100 = -84.42%