-47.73% is the change from 838 to 438
Calculation steps:
[( 438 - 838 ) ÷ 838] x 100 = -47.73%
Formula
Percentage change = [(438 - 838) / 838] x 100
Subtract the new number by the original number
438 - 838 = -400
-400 ÷ 838 = -0.477326968973747
-0.477326968973747 x 100 = -47.73%