-89.87% is the change from 898 to 91
Calculation steps:
[( 91 - 898 ) ÷ 898] x 100 = -89.87%
Formula
Percentage change = [(91 - 898) / 898] x 100
Subtract the new number by the original number
91 - 898 = -807
-807 ÷ 898 = -0.8986636971046771
-0.8986636971046771 x 100 = -89.87%