-97.94% is the change from 873 to 18
Calculation steps:
[( 18 - 873 ) ÷ 873] x 100 = -97.94%
Formula
Percentage change = [(18 - 873) / 873] x 100
Subtract the new number by the original number
18 - 873 = -855
-855 ÷ 873 = -0.979381443298969
-0.979381443298969 x 100 = -97.94%