155.9% is the change from 390 to 998
Calculation steps:
[( 998 - 390 ) ÷ 390] x 100 = 155.9%
Formula
Percentage change = [(998 - 390) / 390] x 100
Subtract the new number by the original number
998 - 390 = 608
608 ÷ 390 = 1.558974358974359
1.558974358974359 x 100 = 155.9%