223.3% is the change from 206 to 666
Calculation steps:
[( 666 - 206 ) ÷ 206] x 100 = 223.3%
Formula
Percentage change = [(666 - 206) / 206] x 100
Subtract the new number by the original number
666 - 206 = 460
460 ÷ 206 = 2.233009708737864
2.233009708737864 x 100 = 223.3%