321.21% is the change from 198 to 834
Calculation steps:
[( 834 - 198 ) ÷ 198] x 100 = 321.21%
Formula
Percentage change = [(834 - 198) / 198] x 100
Subtract the new number by the original number
834 - 198 = 636
636 ÷ 198 = 3.212121212121212
3.212121212121212 x 100 = 321.21%