-50.85% is the change from 826 to 406
Calculation steps:
[( 406 - 826 ) ÷ 826] x 100 = -50.85%
Formula
Percentage change = [(406 - 826) / 826] x 100
Subtract the new number by the original number
406 - 826 = -420
-420 ÷ 826 = -0.5084745762711864
-0.5084745762711864 x 100 = -50.85%