40.79% is the change from 581 to 818
Calculation steps:
[( 818 - 581 ) ÷ 581] x 100 = 40.79%
Formula
Percentage change = [(818 - 581) / 581] x 100
Subtract the new number by the original number
818 - 581 = 237
237 ÷ 581 = 0.4079173838209983
0.4079173838209983 x 100 = 40.79%