-5.38% is the change from 855 to 809
Calculation steps:
[( 809 - 855 ) ÷ 855] x 100 = -5.38%
Formula
Percentage change = [(809 - 855) / 855] x 100
Subtract the new number by the original number
809 - 855 = -46
-46 ÷ 855 = -0.05380116959064327
-0.05380116959064327 x 100 = -5.38%