29.21% is the change from 517 to 668
Calculation steps:
[( 668 - 517 ) ÷ 517] x 100 = 29.21%
Formula
Percentage change = [(668 - 517) / 517] x 100
Subtract the new number by the original number
668 - 517 = 151
151 ÷ 517 = 0.29206963249516443
0.29206963249516443 x 100 = 29.21%