144.5% is the change from 400 to 978
Calculation steps:
[( 978 - 400 ) ÷ 400] x 100 = 144.5%
Formula
Percentage change = [(978 - 400) / 400] x 100
Subtract the new number by the original number
978 - 400 = 578
578 ÷ 400 = 1.445
1.445 x 100 = 144.5%
Example