206.42% is the change from 218 to 668
Calculation steps:
[( 668 - 218 ) ÷ 218] x 100 = 206.42%
Formula
Percentage change = [(668 - 218) / 218] x 100
Subtract the new number by the original number
668 - 218 = 450
450 ÷ 218 = 2.0642201834862384
2.0642201834862384 x 100 = 206.42%