0.5% is the change from 601 to 604
Calculation steps:
[( 604 - 601 ) ÷ 601] x 100 = 0.5%
Formula
Percentage change = [(604 - 601) / 601] x 100
Subtract the new number by the original number
604 - 601 = 3
3 ÷ 601 = 0.004991680532445923
0.004991680532445923 x 100 = 0.5%