31.36% is the change from 507 to 666
Calculation steps:
[( 666 - 507 ) ÷ 507] x 100 = 31.36%
Formula
Percentage change = [(666 - 507) / 507] x 100
Subtract the new number by the original number
666 - 507 = 159
159 ÷ 507 = 0.3136094674556213
0.3136094674556213 x 100 = 31.36%