2.78% is the change from 539 to 554
Calculation steps:
[( 554 - 539 ) ÷ 539] x 100 = 2.78%
Formula
Percentage change = [(554 - 539) / 539] x 100
Subtract the new number by the original number
554 - 539 = 15
15 ÷ 539 = 0.027829313543599257
0.027829313543599257 x 100 = 2.78%