12.3% is the change from 496 to 557
Calculation steps:
[( 557 - 496 ) ÷ 496] x 100 = 12.3%
Formula
Percentage change = [(557 - 496) / 496] x 100
Subtract the new number by the original number
557 - 496 = 61
61 ÷ 496 = 0.12298387096774194
0.12298387096774194 x 100 = 12.3%