380.12% is the change from 171 to 821
Calculation steps:
[( 821 - 171 ) ÷ 171] x 100 = 380.12%
Formula
Percentage change = [(821 - 171) / 171] x 100
Subtract the new number by the original number
821 - 171 = 650
650 ÷ 171 = 3.801169590643275
3.801169590643275 x 100 = 380.12%