-91.12% is the change from 890 to 79
Calculation steps:
[( 79 - 890 ) ÷ 890] x 100 = -91.12%
Formula
Percentage change = [(79 - 890) / 890] x 100
Subtract the new number by the original number
79 - 890 = -811
-811 ÷ 890 = -0.9112359550561798
-0.9112359550561798 x 100 = -91.12%