-39.73% is the change from 828 to 499
Calculation steps:
[( 499 - 828 ) ÷ 828] x 100 = -39.73%
Formula
Percentage change = [(499 - 828) / 828] x 100
Subtract the new number by the original number
499 - 828 = -329
-329 ÷ 828 = -0.3973429951690821
-0.3973429951690821 x 100 = -39.73%