484.21% is the change from 171 to 999
Calculation steps:
[( 999 - 171 ) ÷ 171] x 100 = 484.21%
Formula
Percentage change = [(999 - 171) / 171] x 100
Subtract the new number by the original number
999 - 171 = 828
828 ÷ 171 = 4.842105263157895
4.842105263157895 x 100 = 484.21%