-49.03% is the change from 828 to 422
Calculation steps:
[( 422 - 828 ) ÷ 828] x 100 = -49.03%
Formula
Percentage change = [(422 - 828) / 828] x 100
Subtract the new number by the original number
422 - 828 = -406
-406 ÷ 828 = -0.49033816425120774
-0.49033816425120774 x 100 = -49.03%