13.26% is the change from 513 to 581
Calculation steps:
[( 581 - 513 ) ÷ 513] x 100 = 13.26%
Formula
Percentage change = [(581 - 513) / 513] x 100
Subtract the new number by the original number
581 - 513 = 68
68 ÷ 513 = 0.13255360623781676
0.13255360623781676 x 100 = 13.26%