218.1% is the change from 210 to 668
Calculation steps:
[( 668 - 210 ) ÷ 210] x 100 = 218.1%
Formula
Percentage change = [(668 - 210) / 210] x 100
Subtract the new number by the original number
668 - 210 = 458
458 ÷ 210 = 2.1809523809523808
2.1809523809523808 x 100 = 218.1%