-89.83% is the change from 423 to 43
Calculation steps:
[( 43 - 423 ) ÷ 423] x 100 = -89.83%
Formula
Percentage change = [(43 - 423) / 423] x 100
Subtract the new number by the original number
43 - 423 = -380
-380 ÷ 423 = -0.8983451536643026
-0.8983451536643026 x 100 = -89.83%