-42.55% is the change from 423 to 243
Calculation steps:
[( 243 - 423 ) ÷ 423] x 100 = -42.55%
Formula
Percentage change = [(243 - 423) / 423] x 100
Subtract the new number by the original number
243 - 423 = -180
-180 ÷ 423 = -0.425531914893617
-0.425531914893617 x 100 = -42.55%