-86.11% is the change from 828 to 115
Calculation steps:
[( 115 - 828 ) ÷ 828] x 100 = -86.11%
Formula
Percentage change = [(115 - 828) / 828] x 100
Subtract the new number by the original number
115 - 828 = -713
-713 ÷ 828 = -0.8611111111111112
-0.8611111111111112 x 100 = -86.11%