-50.36% is the change from 828 to 411
Calculation steps:
[( 411 - 828 ) ÷ 828] x 100 = -50.36%
Formula
Percentage change = [(411 - 828) / 828] x 100
Subtract the new number by the original number
411 - 828 = -417
-417 ÷ 828 = -0.5036231884057971
-0.5036231884057971 x 100 = -50.36%