-19.83% is the change from 847 to 679
Calculation steps:
[( 679 - 847 ) ÷ 847] x 100 = -19.83%
Formula
Percentage change = [(679 - 847) / 847] x 100
Subtract the new number by the original number
679 - 847 = -168
-168 ÷ 847 = -0.19834710743801653
-0.19834710743801653 x 100 = -19.83%