-48.77% is the change from 855 to 438
Calculation steps:
[( 438 - 855 ) ÷ 855] x 100 = -48.77%
Formula
Percentage change = [(438 - 855) / 855] x 100
Subtract the new number by the original number
438 - 855 = -417
-417 ÷ 855 = -0.48771929824561405
-0.48771929824561405 x 100 = -48.77%