1% is the change from 603 to 609
Calculation steps:
[( 609 - 603 ) ÷ 603] x 100 = 1%
Formula
Percentage change = [(609 - 603) / 603] x 100
Subtract the new number by the original number
609 - 603 = 6
6 ÷ 603 = 0.009950248756218905
0.009950248756218905 x 100 = 1%