488.99% is the change from 109 to 642
Calculation steps:
[( 642 - 109 ) ÷ 109] x 100 = 488.99%
Formula
Percentage change = [(642 - 109) / 109] x 100
Subtract the new number by the original number
642 - 109 = 533
533 ÷ 109 = 4.889908256880734
4.889908256880734 x 100 = 488.99%