-51.6% is the change from 845 to 409
Calculation steps:
[( 409 - 845 ) ÷ 845] x 100 = -51.6%
Formula
Percentage change = [(409 - 845) / 845] x 100
Subtract the new number by the original number
409 - 845 = -436
-436 ÷ 845 = -0.5159763313609468
-0.5159763313609468 x 100 = -51.6%