-81.18% is the change from 85 to 16
Calculation steps:
[( 16 - 85 ) ÷ 85] x 100 = -81.18%
Formula
Percentage change = [(16 - 85) / 85] x 100
Subtract the new number by the original number
16 - 85 = -69
-69 ÷ 85 = -0.8117647058823529
-0.8117647058823529 x 100 = -81.18%