Conversion Rate – Won Deals over Assigned Prospects

Conversion Rate – Won Deals over Assigned Prospects

Hello,

I would like assistance configuring a KPI in Zoho Analytics titled:

Objective of the calculation:
Number of Won Deals
divided by
Total number of assigned prospects (not only converted prospects).

Important clarification:
The denominator must include all assigned prospects, including those that were never converted into opportunities. The goal is to measure a true sales conversion rate from prospect to paying client.

Business definition details:

  • Won Deals include deals that progressed from free trial to paid stage.

  • Free trial periods must be included in the overall logic (i.e., prospects who entered a trial but did not convert must still be counted in the denominator).

  • The metric must remain filterable by month, marketing campaign (UTM), and sales representative.

Tables involved in the calculation:

  • Prospects table (assigned prospects, status, creation date, owner, etc.)

  • Opportunities table (stage, won deals, free trial period, paid period)

  • Relationship: Opportunities → Prospects via the "Converted From" field

  • Additional related tables used for filtering (e.g., marketing campaigns via UTM parameters)

Issue encountered:
When creating an aggregate formula associated with the Opportunities table, Zoho does not allow me to reference COUNT(DISTINCT "Prospects"."Id"), even though a relationship exists between the tables.

My questions:

  1. What is the recommended way to calculate Won Deals / All Assigned Prospects in Zoho Analytics?

  2. Should this KPI be created from a pivot/report based on the Prospects table instead of Opportunities?

  3. What is the best practice to avoid aggregation errors when calculating metrics across related tables?

I want to ensure that:

  • All prospects are included (converted and non-converted)

  • Free trial periods are properly considered

  • The calculation remains dynamically filter