21.04% is the change from 556 to 673
Calculation steps:
[( 673 - 556 ) ÷ 556] x 100 = 21.04%
Formula
Percentage change = [(673 - 556) / 556] x 100
Subtract the new number by the original number
673 - 556 = 117
117 ÷ 556 = 0.210431654676259
0.210431654676259 x 100 = 21.04%