148.74% is the change from 398 to 990
Calculation steps:
[( 990 - 398 ) ÷ 398] x 100 = 148.74%
Formula
Percentage change = [(990 - 398) / 398] x 100
Subtract the new number by the original number
990 - 398 = 592
592 ÷ 398 = 1.4874371859296482
1.4874371859296482 x 100 = 148.74%