-87.78% is the change from 900 to 110
Calculation steps:
[( 110 - 900 ) ÷ 900] x 100 = -87.78%
Formula
Percentage change = [(110 - 900) / 900] x 100
Subtract the new number by the original number
110 - 900 = -790
-790 ÷ 900 = -0.8777777777777778
-0.8777777777777778 x 100 = -87.78%