7.78% is the change from 540 to 582
Calculation steps:
[( 582 - 540 ) ÷ 540] x 100 = 7.78%
Formula
Percentage change = [(582 - 540) / 540] x 100
Subtract the new number by the original number
582 - 540 = 42
42 ÷ 540 = 0.07777777777777778
0.07777777777777778 x 100 = 7.78%