-88.29% is the change from 828 to 97
Calculation steps:
[( 97 - 828 ) ÷ 828] x 100 = -88.29%
Formula
Percentage change = [(97 - 828) / 828] x 100
Subtract the new number by the original number
97 - 828 = -731
-731 ÷ 828 = -0.8828502415458938
-0.8828502415458938 x 100 = -88.29%