-19.91% is the change from 422 to 338
Calculation steps:
[( 338 - 422 ) ÷ 422] x 100 = -19.91%
Formula
Percentage change = [(338 - 422) / 422] x 100
Subtract the new number by the original number
338 - 422 = -84
-84 ÷ 422 = -0.1990521327014218
-0.1990521327014218 x 100 = -19.91%