-52.5% is the change from 539 to 256
Calculation steps:
[( 256 - 539 ) ÷ 539] x 100 = -52.5%
Formula
Percentage change = [(256 - 539) / 539] x 100
Subtract the new number by the original number
256 - 539 = -283
-283 ÷ 539 = -0.5250463821892394
-0.5250463821892394 x 100 = -52.5%