-79.07% is the change from 43 to 9
Calculation steps:
[( 9 - 43 ) ÷ 43] x 100 = -79.07%
Formula
Percentage change = [(9 - 43) / 43] x 100
Subtract the new number by the original number
9 - 43 = -34
-34 ÷ 43 = -0.7906976744186046
-0.7906976744186046 x 100 = -79.07%
Example