32.67% is the change from 502 to 666
Calculation steps:
[( 666 - 502 ) ÷ 502] x 100 = 32.67%
Formula
Percentage change = [(666 - 502) / 502] x 100
Subtract the new number by the original number
666 - 502 = 164
164 ÷ 502 = 0.32669322709163345
0.32669322709163345 x 100 = 32.67%