-89.1% is the change from 908 to 99
Calculation steps:
[( 99 - 908 ) ÷ 908] x 100 = -89.1%
Formula
Percentage change = [(99 - 908) / 908] x 100
Subtract the new number by the original number
99 - 908 = -809
-809 ÷ 908 = -0.8909691629955947
-0.8909691629955947 x 100 = -89.1%