-96.8% is the change from 845 to 27
Calculation steps:
[( 27 - 845 ) ÷ 845] x 100 = -96.8%
Formula
Percentage change = [(27 - 845) / 845] x 100
Subtract the new number by the original number
27 - 845 = -818
-818 ÷ 845 = -0.9680473372781065
-0.9680473372781065 x 100 = -96.8%