3.07% is the change from 618 to 637
Calculation steps:
[( 637 - 618 ) ÷ 618] x 100 = 3.07%
Formula
Percentage change = [(637 - 618) / 618] x 100
Subtract the new number by the original number
637 - 618 = 19
19 ÷ 618 = 0.030744336569579287
0.030744336569579287 x 100 = 3.07%