-18.59% is the change from 834 to 679
Calculation steps:
[( 679 - 834 ) ÷ 834] x 100 = -18.59%
Formula
Percentage change = [(679 - 834) / 834] x 100
Subtract the new number by the original number
679 - 834 = -155
-155 ÷ 834 = -0.18585131894484413
-0.18585131894484413 x 100 = -18.59%