7.99% is the change from 538 to 581
Calculation steps:
[( 581 - 538 ) ÷ 538] x 100 = 7.99%
Formula
Percentage change = [(581 - 538) / 538] x 100
Subtract the new number by the original number
581 - 538 = 43
43 ÷ 538 = 0.07992565055762081
0.07992565055762081 x 100 = 7.99%