26.9% is the change from 539 to 684
Calculation steps:
[( 684 - 539 ) ÷ 539] x 100 = 26.9%
Formula
Percentage change = [(684 - 539) / 539] x 100
Subtract the new number by the original number
684 - 539 = 145
145 ÷ 539 = 0.2690166975881262
0.2690166975881262 x 100 = 26.9%