41.14% is the change from 581 to 820
Calculation steps:
[( 820 - 581 ) ÷ 581] x 100 = 41.14%
Formula
Percentage change = [(820 - 581) / 581] x 100
Subtract the new number by the original number
820 - 581 = 239
239 ÷ 581 = 0.4113597246127367
0.4113597246127367 x 100 = 41.14%