-5.75% is the change from 539 to 508
Calculation steps:
[( 508 - 539 ) ÷ 539] x 100 = -5.75%
Formula
Percentage change = [(508 - 539) / 539] x 100
Subtract the new number by the original number
508 - 539 = -31
-31 ÷ 539 = -0.0575139146567718
-0.0575139146567718 x 100 = -5.75%