20.72% is the change from 555 to 670
Calculation steps:
[( 670 - 555 ) ÷ 555] x 100 = 20.72%
Formula
Percentage change = [(670 - 555) / 555] x 100
Subtract the new number by the original number
670 - 555 = 115
115 ÷ 555 = 0.2072072072072072
0.2072072072072072 x 100 = 20.72%