20.5% is the change from 556 to 670
Calculation steps:
[( 670 - 556 ) ÷ 556] x 100 = 20.5%
Formula
Percentage change = [(670 - 556) / 556] x 100
Subtract the new number by the original number
670 - 556 = 114
114 ÷ 556 = 0.20503597122302158
0.20503597122302158 x 100 = 20.5%