27.27% is the change from 539 to 686
Calculation steps:
[( 686 - 539 ) ÷ 539] x 100 = 27.27%
Formula
Percentage change = [(686 - 539) / 539] x 100
Subtract the new number by the original number
686 - 539 = 147
147 ÷ 539 = 0.2727272727272727
0.2727272727272727 x 100 = 27.27%