33.13% is the change from 501 to 667
Calculation steps:
[( 667 - 501 ) ÷ 501] x 100 = 33.13%
Formula
Percentage change = [(667 - 501) / 501] x 100
Subtract the new number by the original number
667 - 501 = 166
166 ÷ 501 = 0.3313373253493014
0.3313373253493014 x 100 = 33.13%