-88.88% is the change from 890 to 99
Calculation steps:
[( 99 - 890 ) ÷ 890] x 100 = -88.88%
Formula
Percentage change = [(99 - 890) / 890] x 100
Subtract the new number by the original number
99 - 890 = -791
-791 ÷ 890 = -0.8887640449438202
-0.8887640449438202 x 100 = -88.88%