-19.64% is the change from 845 to 679
Calculation steps:
[( 679 - 845 ) ÷ 845] x 100 = -19.64%
Formula
Percentage change = [(679 - 845) / 845] x 100
Subtract the new number by the original number
679 - 845 = -166
-166 ÷ 845 = -0.19644970414201182
-0.19644970414201182 x 100 = -19.64%