379.53% is the change from 171 to 820
Calculation steps:
[( 820 - 171 ) ÷ 171] x 100 = 379.53%
Formula
Percentage change = [(820 - 171) / 171] x 100
Subtract the new number by the original number
820 - 171 = 649
649 ÷ 171 = 3.7953216374269005
3.7953216374269005 x 100 = 379.53%