6.93% is the change from 505 to 540
Calculation steps:
[( 540 - 505 ) ÷ 505] x 100 = 6.93%
Formula
Percentage change = [(540 - 505) / 505] x 100
Subtract the new number by the original number
540 - 505 = 35
35 ÷ 505 = 0.06930693069306931
0.06930693069306931 x 100 = 6.93%