378.36% is the change from 171 to 818
Calculation steps:
[( 818 - 171 ) ÷ 171] x 100 = 378.36%
Formula
Percentage change = [(818 - 171) / 171] x 100
Subtract the new number by the original number
818 - 171 = 647
647 ÷ 171 = 3.783625730994152
3.783625730994152 x 100 = 378.36%