-51.14% is the change from 923 to 451
Calculation steps:
[( 451 - 923 ) ÷ 923] x 100 = -51.14%
Formula
Percentage change = [(451 - 923) / 923] x 100
Subtract the new number by the original number
451 - 923 = -472
-472 ÷ 923 = -0.5113759479956663
-0.5113759479956663 x 100 = -51.14%