20.72% is the change from 502 to 606
Calculation steps:
[( 606 - 502 ) ÷ 502] x 100 = 20.72%
Formula
Percentage change = [(606 - 502) / 502] x 100
Subtract the new number by the original number
606 - 502 = 104
104 ÷ 502 = 0.20717131474103587
0.20717131474103587 x 100 = 20.72%