-94.19% is the change from 155 to 9
Calculation steps:
[( 9 - 155 ) ÷ 155] x 100 = -94.19%
Formula
Percentage change = [(9 - 155) / 155] x 100
Subtract the new number by the original number
9 - 155 = -146
-146 ÷ 155 = -0.9419354838709677
-0.9419354838709677 x 100 = -94.19%