-96.09% is the change from 230 to 9
Calculation steps:
[( 9 - 230 ) ÷ 230] x 100 = -96.09%
Formula
Percentage change = [(9 - 230) / 230] x 100
Subtract the new number by the original number
9 - 230 = -221
-221 ÷ 230 = -0.9608695652173913
-0.9608695652173913 x 100 = -96.09%