1.8% is the change from 610 to 621
Calculation steps:
[( 621 - 610 ) ÷ 610] x 100 = 1.8%
Formula
Percentage change = [(621 - 610) / 610] x 100
Subtract the new number by the original number
621 - 610 = 11
11 ÷ 610 = 0.018032786885245903
0.018032786885245903 x 100 = 1.8%