Configuring Delivery Adherence Score (DAS) Formula in supplier scorecard

We have configured the DAS(Delivery, Adherence, and Score) formula in our supplier scorecard, but it appears that the formula is not working as expected. Despite following the configuration steps, the results are not being calculated correctly.

For Your reference,
We would like to rate our vendors based on :
Delivery Adherence Score (DAS): DAS = (Promised delivery time (days) / Actual delivery time (days)) * 100
Instead of these, what variables I can use? These variables are not successful for us.
kindly provide us, the correct formula or variable for this.