-42.86% is the change from 539 to 308
Calculation steps:
[( 308 - 539 ) ÷ 539] x 100 = -42.86%
Formula
Percentage change = [(308 - 539) / 539] x 100
Subtract the new number by the original number
308 - 539 = -231
-231 ÷ 539 = -0.42857142857142855
-0.42857142857142855 x 100 = -42.86%