14.71% is the change from 503 to 577
Calculation steps:
[( 577 - 503 ) ÷ 503] x 100 = 14.71%
Formula
Percentage change = [(577 - 503) / 503] x 100
Subtract the new number by the original number
577 - 503 = 74
74 ÷ 503 = 0.147117296222664
0.147117296222664 x 100 = 14.71%