-91.32% is the change from 899 to 78
Calculation steps:
[( 78 - 899 ) ÷ 899] x 100 = -91.32%
Formula
Percentage change = [(78 - 899) / 899] x 100
Subtract the new number by the original number
78 - 899 = -821
-821 ÷ 899 = -0.9132369299221357
-0.9132369299221357 x 100 = -91.32%