-56.99% is the change from 923 to 397
Calculation steps:
[( 397 - 923 ) ÷ 923] x 100 = -56.99%
Formula
Percentage change = [(397 - 923) / 923] x 100
Subtract the new number by the original number
397 - 923 = -526
-526 ÷ 923 = -0.5698808234019501
-0.5698808234019501 x 100 = -56.99%