-76.79% is the change from 685 to 159
Calculation steps:
[( 159 - 685 ) ÷ 685] x 100 = -76.79%
Formula
Percentage change = [(159 - 685) / 685] x 100
Subtract the new number by the original number
159 - 685 = -526
-526 ÷ 685 = -0.7678832116788321
-0.7678832116788321 x 100 = -76.79%