339.9% is the change from 198 to 871
Calculation steps:
[( 871 - 198 ) ÷ 198] x 100 = 339.9%
Formula
Percentage change = [(871 - 198) / 198] x 100
Subtract the new number by the original number
871 - 198 = 673
673 ÷ 198 = 3.398989898989899
3.398989898989899 x 100 = 339.9%