33.07% is the change from 511 to 680
Calculation steps:
[( 680 - 511 ) ÷ 511] x 100 = 33.07%
Formula
Percentage change = [(680 - 511) / 511] x 100
Subtract the new number by the original number
680 - 511 = 169
169 ÷ 511 = 0.33072407045009783
0.33072407045009783 x 100 = 33.07%