-51.35% is the change from 923 to 449
Calculation steps:
[( 449 - 923 ) ÷ 923] x 100 = -51.35%
Formula
Percentage change = [(449 - 923) / 923] x 100
Subtract the new number by the original number
449 - 923 = -474
-474 ÷ 923 = -0.5135427952329361
-0.5135427952329361 x 100 = -51.35%