208.65% is the change from 208 to 642
Calculation steps:
[( 642 - 208 ) ÷ 208] x 100 = 208.65%
Formula
Percentage change = [(642 - 208) / 208] x 100
Subtract the new number by the original number
642 - 208 = 434
434 ÷ 208 = 2.0865384615384617
2.0865384615384617 x 100 = 208.65%