-83.8% is the change from 673 to 109
Calculation steps:
[( 109 - 673 ) ÷ 673] x 100 = -83.8%
Formula
Percentage change = [(109 - 673) / 673] x 100
Subtract the new number by the original number
109 - 673 = -564
-564 ÷ 673 = -0.8380386329866271
-0.8380386329866271 x 100 = -83.8%