-72.73% is the change from 33 to 9
Calculation steps:
[( 9 - 33 ) ÷ 33] x 100 = -72.73%
Formula
Percentage change = [(9 - 33) / 33] x 100
Subtract the new number by the original number
9 - 33 = -24
-24 ÷ 33 = -0.7272727272727273
-0.7272727272727273 x 100 = -72.73%