0.6% is the change from 501 to 504
Calculation steps:
[( 504 - 501 ) ÷ 501] x 100 = 0.6%
Formula
Percentage change = [(504 - 501) / 501] x 100
Subtract the new number by the original number
504 - 501 = 3
3 ÷ 501 = 0.005988023952095809
0.005988023952095809 x 100 = 0.6%