-85.88% is the change from 85 to 12
Calculation steps:
[( 12 - 85 ) ÷ 85] x 100 = -85.88%
Formula
Percentage change = [(12 - 85) / 85] x 100
Subtract the new number by the original number
12 - 85 = -73
-73 ÷ 85 = -0.8588235294117647
-0.8588235294117647 x 100 = -85.88%