3.55% is the change from 507 to 525
Calculation steps:
[( 525 - 507 ) ÷ 507] x 100 = 3.55%
Formula
Percentage change = [(525 - 507) / 507] x 100
Subtract the new number by the original number
525 - 507 = 18
18 ÷ 507 = 0.03550295857988166
0.03550295857988166 x 100 = 3.55%