2.74% is the change from 511 to 525
Calculation steps:
[( 525 - 511 ) ÷ 511] x 100 = 2.74%
Formula
Percentage change = [(525 - 511) / 511] x 100
Subtract the new number by the original number
525 - 511 = 14
14 ÷ 511 = 0.0273972602739726
0.0273972602739726 x 100 = 2.74%