-19.39% is the change from 423 to 341
Calculation steps:
[( 341 - 423 ) ÷ 423] x 100 = -19.39%
Formula
Percentage change = [(341 - 423) / 423] x 100
Subtract the new number by the original number
341 - 423 = -82
-82 ÷ 423 = -0.1938534278959811
-0.1938534278959811 x 100 = -19.39%