15.77% is the change from 539 to 624
Calculation steps:
[( 624 - 539 ) ÷ 539] x 100 = 15.77%
Formula
Percentage change = [(624 - 539) / 539] x 100
Subtract the new number by the original number
624 - 539 = 85
85 ÷ 539 = 0.15769944341372913
0.15769944341372913 x 100 = 15.77%