42.07% is the change from 668 to 949
Calculation steps:
[( 949 - 668 ) ÷ 668] x 100 = 42.07%
Formula
Percentage change = [(949 - 668) / 668] x 100
Subtract the new number by the original number
949 - 668 = 281
281 ÷ 668 = 0.42065868263473055
0.42065868263473055 x 100 = 42.07%