-18.97% is the change from 838 to 679
Calculation steps:
[( 679 - 838 ) ÷ 838] x 100 = -18.97%
Formula
Percentage change = [(679 - 838) / 838] x 100
Subtract the new number by the original number
679 - 838 = -159
-159 ÷ 838 = -0.18973747016706444
-0.18973747016706444 x 100 = -18.97%