-85.02% is the change from 828 to 124
Calculation steps:
[( 124 - 828 ) ÷ 828] x 100 = -85.02%
Formula
Percentage change = [(124 - 828) / 828] x 100
Subtract the new number by the original number
124 - 828 = -704
-704 ÷ 828 = -0.8502415458937198
-0.8502415458937198 x 100 = -85.02%