-88.47% is the change from 685 to 79
Calculation steps:
[( 79 - 685 ) ÷ 685] x 100 = -88.47%
Formula
Percentage change = [(79 - 685) / 685] x 100
Subtract the new number by the original number
79 - 685 = -606
-606 ÷ 685 = -0.8846715328467153
-0.8846715328467153 x 100 = -88.47%