-95.45% is the change from 198 to 9
Calculation steps:
[( 9 - 198 ) ÷ 198] x 100 = -95.45%
Formula
Percentage change = [(9 - 198) / 198] x 100
Subtract the new number by the original number
9 - 198 = -189
-189 ÷ 198 = -0.9545454545454546
-0.9545454545454546 x 100 = -95.45%