23.93% is the change from 539 to 668
Calculation steps:
[( 668 - 539 ) ÷ 539] x 100 = 23.93%
Formula
Percentage change = [(668 - 539) / 539] x 100
Subtract the new number by the original number
668 - 539 = 129
129 ÷ 539 = 0.23933209647495363
0.23933209647495363 x 100 = 23.93%