-91.69% is the change from 878 to 73
Calculation steps:
[( 73 - 878 ) ÷ 878] x 100 = -91.69%
Formula
Percentage change = [(73 - 878) / 878] x 100
Subtract the new number by the original number
73 - 878 = -805
-805 ÷ 878 = -0.9168564920273349
-0.9168564920273349 x 100 = -91.69%