What you must do for this case is to solve the given percentage value and convert it into a number that you can use as a factor within an expression.
We then define the factor k.
We now look for the value of the factor k in the following way:
k = (- 56.25%) * (1/100)
k = -0.5625
Answer:
the 1-unit growth factor is:
k = -0.5625