3.48% is the change from 603 to 624
Calculation steps:
[( 624 - 603 ) ÷ 603] x 100 = 3.48%
Formula
Percentage change = [(624 - 603) / 603] x 100
Subtract the new number by the original number
624 - 603 = 21
21 ÷ 603 = 0.03482587064676617
0.03482587064676617 x 100 = 3.48%