-56.88% is the change from 923 to 398
Calculation steps:
[( 398 - 923 ) ÷ 923] x 100 = -56.88%
Formula
Percentage change = [(398 - 923) / 923] x 100
Subtract the new number by the original number
398 - 923 = -525
-525 ÷ 923 = -0.5687973997833152
-0.5687973997833152 x 100 = -56.88%