404.55% is the change from 198 to 999
Calculation steps:
[( 999 - 198 ) ÷ 198] x 100 = 404.55%
Formula
Percentage change = [(999 - 198) / 198] x 100
Subtract the new number by the original number
999 - 198 = 801
801 ÷ 198 = 4.045454545454546
4.045454545454546 x 100 = 404.55%