373.1% is the change from 171 to 809
Calculation steps:
[( 809 - 171 ) ÷ 171] x 100 = 373.1%
Formula
Percentage change = [(809 - 171) / 171] x 100
Subtract the new number by the original number
809 - 171 = 638
638 ÷ 171 = 3.7309941520467835
3.7309941520467835 x 100 = 373.1%