12.52% is the change from 503 to 566
Calculation steps:
[( 566 - 503 ) ÷ 503] x 100 = 12.52%
Formula
Percentage change = [(566 - 503) / 503] x 100
Subtract the new number by the original number
566 - 503 = 63
63 ÷ 503 = 0.12524850894632206
0.12524850894632206 x 100 = 12.52%