2.97% is the change from 539 to 555
Calculation steps:
[( 555 - 539 ) ÷ 539] x 100 = 2.97%
Formula
Percentage change = [(555 - 539) / 539] x 100
Subtract the new number by the original number
555 - 539 = 16
16 ÷ 539 = 0.029684601113172542
0.029684601113172542 x 100 = 2.97%