-56.66% is the change from 923 to 400
Calculation steps:
[( 400 - 923 ) ÷ 923] x 100 = -56.66%
Formula
Percentage change = [(400 - 923) / 923] x 100
Subtract the new number by the original number
400 - 923 = -523
-523 ÷ 923 = -0.5666305525460456
-0.5666305525460456 x 100 = -56.66%