29.9% is the change from 515 to 669
Calculation steps:
[( 669 - 515 ) ÷ 515] x 100 = 29.9%
Formula
Percentage change = [(669 - 515) / 515] x 100
Subtract the new number by the original number
669 - 515 = 154
154 ÷ 515 = 0.29902912621359223
0.29902912621359223 x 100 = 29.9%