27.4% is the change from 511 to 651
Calculation steps:
[( 651 - 511 ) ÷ 511] x 100 = 27.4%
Formula
Percentage change = [(651 - 511) / 511] x 100
Subtract the new number by the original number
651 - 511 = 140
140 ÷ 511 = 0.273972602739726
0.273972602739726 x 100 = 27.4%