13.52% is the change from 503 to 571
Calculation steps:
[( 571 - 503 ) ÷ 503] x 100 = 13.52%
Formula
Percentage change = [(571 - 503) / 503] x 100
Subtract the new number by the original number
571 - 503 = 68
68 ÷ 503 = 0.13518886679920478
0.13518886679920478 x 100 = 13.52%