-40.69% is the change from 838 to 497
Calculation steps:
[( 497 - 838 ) ÷ 838] x 100 = -40.69%
Formula
Percentage change = [(497 - 838) / 838] x 100
Subtract the new number by the original number
497 - 838 = -341
-341 ÷ 838 = -0.40692124105011934
-0.40692124105011934 x 100 = -40.69%
Example