2.7% is the change from 555 to 570
Calculation steps:
[( 570 - 555 ) ÷ 555] x 100 = 2.7%
Formula
Percentage change = [(570 - 555) / 555] x 100
Subtract the new number by the original number
570 - 555 = 15
15 ÷ 555 = 0.02702702702702703
0.02702702702702703 x 100 = 2.7%