-51.57% is the change from 828 to 401
Calculation steps:
[( 401 - 828 ) ÷ 828] x 100 = -51.57%
Formula
Percentage change = [(401 - 828) / 828] x 100
Subtract the new number by the original number
401 - 828 = -427
-427 ÷ 828 = -0.5157004830917874
-0.5157004830917874 x 100 = -51.57%