23.02% is the change from 556 to 684
Calculation steps:
[( 684 - 556 ) ÷ 556] x 100 = 23.02%
Formula
Percentage change = [(684 - 556) / 556] x 100
Subtract the new number by the original number
684 - 556 = 128
128 ÷ 556 = 0.2302158273381295
0.2302158273381295 x 100 = 23.02%