-92.76% is the change from 539 to 39
Calculation steps:
[( 39 - 539 ) ÷ 539] x 100 = -92.76%
Formula
Percentage change = [(39 - 539) / 539] x 100
Subtract the new number by the original number
39 - 539 = -500
-500 ÷ 539 = -0.9276437847866419
-0.9276437847866419 x 100 = -92.76%