13.54% is the change from 539 to 612
Calculation steps:
[( 612 - 539 ) ÷ 539] x 100 = 13.54%
Formula
Percentage change = [(612 - 539) / 539] x 100
Subtract the new number by the original number
612 - 539 = 73
73 ÷ 539 = 0.13543599257884972
0.13543599257884972 x 100 = 13.54%