33.27% is the change from 511 to 681
Calculation steps:
[( 681 - 511 ) ÷ 511] x 100 = 33.27%
Formula
Percentage change = [(681 - 511) / 511] x 100
Subtract the new number by the original number
681 - 511 = 170
170 ÷ 511 = 0.33268101761252444
0.33268101761252444 x 100 = 33.27%