Notecaddy - Composite Definition Fails

[tese]

Hi everyone, I have a problem with a composite definition of Notecaddy.

This definition shows the percentage value of one statistic relative to another.
Well, when the result is with only one decimal the percentage appears correctly to me:

ex.
2/5 = 0.4 -> OK
2/4 = 0.5 -> OK

Instead, when the result has more decimals, it returns a value of 99:

ex.
13/21 = 0.619047619047619 -> Error

Can you help me solve it?

I am attaching an image:
Senza titolo-1.jpg