18.35% is the change from 425 to 503
Calculation steps:
[( 503 - 425 ) ÷ 425] x 100 = 18.35%
Formula
Percentage change = [(503 - 425) / 425] x 100
Subtract the new number by the original number
503 - 425 = 78
78 ÷ 425 = 0.18352941176470589
0.18352941176470589 x 100 = 18.35%