39.07% is the change from 668 to 929
Calculation steps:
[( 929 - 668 ) ÷ 668] x 100 = 39.07%
Formula
Percentage change = [(929 - 668) / 668] x 100
Subtract the new number by the original number
929 - 668 = 261
261 ÷ 668 = 0.3907185628742515
0.3907185628742515 x 100 = 39.07%