33.01% is the change from 512 to 681
Calculation steps:
[( 681 - 512 ) ÷ 512] x 100 = 33.01%
Formula
Percentage change = [(681 - 512) / 512] x 100
Subtract the new number by the original number
681 - 512 = 169
169 ÷ 512 = 0.330078125
0.330078125 x 100 = 33.01%