-54.17% is the change from 923 to 423
Calculation steps:
[( 423 - 923 ) ÷ 923] x 100 = -54.17%
Formula
Percentage change = [(423 - 923) / 923] x 100
Subtract the new number by the original number
423 - 923 = -500
-500 ÷ 923 = -0.5417118093174431
-0.5417118093174431 x 100 = -54.17%