16.71% is the change from 431 to 503
Calculation steps:
[( 503 - 431 ) ÷ 431] x 100 = 16.71%
Formula
Percentage change = [(503 - 431) / 431] x 100
Subtract the new number by the original number
503 - 431 = 72
72 ÷ 431 = 0.16705336426914152
0.16705336426914152 x 100 = 16.71%