-24.59% is the change from 423 to 319
Calculation steps:
[( 319 - 423 ) ÷ 423] x 100 = -24.59%
Formula
Percentage change = [(319 - 423) / 423] x 100
Subtract the new number by the original number
319 - 423 = -104
-104 ÷ 423 = -0.2458628841607565
-0.2458628841607565 x 100 = -24.59%