15.47% is the change from 556 to 642
Calculation steps:
[( 642 - 556 ) ÷ 556] x 100 = 15.47%
Formula
Percentage change = [(642 - 556) / 556] x 100
Subtract the new number by the original number
642 - 556 = 86
86 ÷ 556 = 0.15467625899280577
0.15467625899280577 x 100 = 15.47%