-40.94% is the change from 828 to 489
Calculation steps:
[( 489 - 828 ) ÷ 828] x 100 = -40.94%
Formula
Percentage change = [(489 - 828) / 828] x 100
Subtract the new number by the original number
489 - 828 = -339
-339 ÷ 828 = -0.40942028985507245
-0.40942028985507245 x 100 = -40.94%