3.04% is the change from 624 to 643
Calculation steps:
[( 643 - 624 ) ÷ 624] x 100 = 3.04%
Formula
Percentage change = [(643 - 624) / 624] x 100
Subtract the new number by the original number
643 - 624 = 19
19 ÷ 624 = 0.030448717948717948
0.030448717948717948 x 100 = 3.04%