-50.48% is the change from 826 to 409
Calculation steps:
[( 409 - 826 ) ÷ 826] x 100 = -50.48%
Formula
Percentage change = [(409 - 826) / 826] x 100
Subtract the new number by the original number
409 - 826 = -417
-417 ÷ 826 = -0.5048426150121066
-0.5048426150121066 x 100 = -50.48%