-89.61% is the change from 991 to 103
Calculation steps:
[( 103 - 991 ) ÷ 991] x 100 = -89.61%
Formula
Percentage change = [(103 - 991) / 991] x 100
Subtract the new number by the original number
103 - 991 = -888
-888 ÷ 991 = -0.8960645812310797
-0.8960645812310797 x 100 = -89.61%