29.32% is the change from 515 to 666
Calculation steps:
[( 666 - 515 ) ÷ 515] x 100 = 29.32%
Formula
Percentage change = [(666 - 515) / 515] x 100
Subtract the new number by the original number
666 - 515 = 151
151 ÷ 515 = 0.29320388349514565
0.29320388349514565 x 100 = 29.32%