-83.33% is the change from 54 to 9
Calculation steps:
[( 9 - 54 ) ÷ 54] x 100 = -83.33%
Formula
Percentage change = [(9 - 54) / 54] x 100
Subtract the new number by the original number
9 - 54 = -45
-45 ÷ 54 = -0.8333333333333334
-0.8333333333333334 x 100 = -83.33%