-49.63% is the change from 806 to 406
Calculation steps:
[( 406 - 806 ) ÷ 806] x 100 = -49.63%
Formula
Percentage change = [(406 - 806) / 806] x 100
Subtract the new number by the original number
406 - 806 = -400
-400 ÷ 806 = -0.49627791563275436
-0.49627791563275436 x 100 = -49.63%