31.16% is the change from 507 to 665
Calculation steps:
[( 665 - 507 ) ÷ 507] x 100 = 31.16%
Formula
Percentage change = [(665 - 507) / 507] x 100
Subtract the new number by the original number
665 - 507 = 158
158 ÷ 507 = 0.3116370808678501
0.3116370808678501 x 100 = 31.16%