153.55% is the change from 394 to 999
Calculation steps:
[( 999 - 394 ) ÷ 394] x 100 = 153.55%
Formula
Percentage change = [(999 - 394) / 394] x 100
Subtract the new number by the original number
999 - 394 = 605
605 ÷ 394 = 1.5355329949238579
1.5355329949238579 x 100 = 153.55%