-12.28% is the change from 456 to 400
Calculation steps:
[( 400 - 456 ) ÷ 456] x 100 = -12.28%
Formula
Percentage change = [(400 - 456) / 456] x 100
Subtract the new number by the original number
400 - 456 = -56
-56 ÷ 456 = -0.12280701754385964
-0.12280701754385964 x 100 = -12.28%