18.93% is the change from 581 to 691
Calculation steps:
[( 691 - 581 ) ÷ 581] x 100 = 18.93%
Formula
Percentage change = [(691 - 581) / 581] x 100
Subtract the new number by the original number
691 - 581 = 110
110 ÷ 581 = 0.18932874354561102
0.18932874354561102 x 100 = 18.93%