-14% is the change from 400 to 344
Calculation steps:
[( 344 - 400 ) ÷ 400] x 100 = -14%
Formula
Percentage change = [(344 - 400) / 400] x 100
Subtract the new number by the original number
344 - 400 = -56
-56 ÷ 400 = -0.14
-0.14 x 100 = -14%
Example