-96.74% is the change from 828 to 27
Calculation steps:
[( 27 - 828 ) ÷ 828] x 100 = -96.74%
Formula
Percentage change = [(27 - 828) / 828] x 100
Subtract the new number by the original number
27 - 828 = -801
-801 ÷ 828 = -0.967391304347826
-0.967391304347826 x 100 = -96.74%