-67.18% is the change from 259 to 85
Calculation steps:
[( 85 - 259 ) ÷ 259] x 100 = -67.18%
Formula
Percentage change = [(85 - 259) / 259] x 100
Subtract the new number by the original number
85 - 259 = -174
-174 ÷ 259 = -0.6718146718146718
-0.6718146718146718 x 100 = -67.18%