15.28% is the change from 504 to 581
Calculation steps:
[( 581 - 504 ) ÷ 504] x 100 = 15.28%
Formula
Percentage change = [(581 - 504) / 504] x 100
Subtract the new number by the original number
581 - 504 = 77
77 ÷ 504 = 0.1527777777777778
0.1527777777777778 x 100 = 15.28%