215.6% is the change from 218 to 688
Calculation steps:
[( 688 - 218 ) ÷ 218] x 100 = 215.6%
Formula
Percentage change = [(688 - 218) / 218] x 100
Subtract the new number by the original number
688 - 218 = 470
470 ÷ 218 = 2.1559633027522938
2.1559633027522938 x 100 = 215.6%