-91.46% is the change from 855 to 73
Calculation steps:
[( 73 - 855 ) ÷ 855] x 100 = -91.46%
Formula
Percentage change = [(73 - 855) / 855] x 100
Subtract the new number by the original number
73 - 855 = -782
-782 ÷ 855 = -0.9146198830409357
-0.9146198830409357 x 100 = -91.46%