7% is the change from 543 to 581
Calculation steps:
[( 581 - 543 ) ÷ 543] x 100 = 7%
Formula
Percentage change = [(581 - 543) / 543] x 100
Subtract the new number by the original number
581 - 543 = 38
38 ÷ 543 = 0.06998158379373849
0.06998158379373849 x 100 = 7%