Answer :
scale factor of 5 means it is 5 times bigger.
Suppose the figure was 100.
Now, it is,
100 * 500 = 500
To shrink it back to 100, we would need to:
500 * x = 100
note: 500 times what scale factor (x) we can multiply for it to make 100?
Now,
x = 100/500
x = 1/5
New scale factor needed is:
[tex]\frac{1}{5}[/tex]