151.01% is the change from 398 to 999
Calculation steps:
[( 999 - 398 ) ÷ 398] x 100 = 151.01%
Formula
Percentage change = [(999 - 398) / 398] x 100
Subtract the new number by the original number
999 - 398 = 601
601 ÷ 398 = 1.5100502512562815
1.5100502512562815 x 100 = 151.01%