4.9% is the change from 531 to 557
Calculation steps:
[( 557 - 531 ) ÷ 531] x 100 = 4.9%
Formula
Percentage change = [(557 - 531) / 531] x 100
Subtract the new number by the original number
557 - 531 = 26
26 ÷ 531 = 0.04896421845574388
0.04896421845574388 x 100 = 4.9%