-27.27% is the change from 539 to 392
Calculation steps:
[( 392 - 539 ) ÷ 539] x 100 = -27.27%
Formula
Percentage change = [(392 - 539) / 539] x 100
Subtract the new number by the original number
392 - 539 = -147
-147 ÷ 539 = -0.2727272727272727
-0.2727272727272727 x 100 = -27.27%