149.25% is the change from 400 to 997
Calculation steps:
[( 997 - 400 ) ÷ 400] x 100 = 149.25%
Formula
Percentage change = [(997 - 400) / 400] x 100
Subtract the new number by the original number
997 - 400 = 597
597 ÷ 400 = 1.4925
1.4925 x 100 = 149.25%