4.05% is the change from 618 to 643
Calculation steps:
[( 643 - 618 ) ÷ 618] x 100 = 4.05%
Formula
Percentage change = [(643 - 618) / 618] x 100
Subtract the new number by the original number
643 - 618 = 25
25 ÷ 618 = 0.040453074433656956
0.040453074433656956 x 100 = 4.05%