-20.59% is the change from 539 to 428
Calculation steps:
[( 428 - 539 ) ÷ 539] x 100 = -20.59%
Formula
Percentage change = [(428 - 539) / 539] x 100
Subtract the new number by the original number
428 - 539 = -111
-111 ÷ 539 = -0.20593692022263452
-0.20593692022263452 x 100 = -20.59%