6.51% is the change from 507 to 540
Calculation steps:
[( 540 - 507 ) ÷ 507] x 100 = 6.51%
Formula
Percentage change = [(540 - 507) / 507] x 100
Subtract the new number by the original number
540 - 507 = 33
33 ÷ 507 = 0.0650887573964497
0.0650887573964497 x 100 = 6.51%