When you login into your Portal. On the left hand side you will see a Visitor Stats tab under the "Aggregated data" tab. This will give you your conversion rate over the selected time period.
If you then click on the Conversion Rate tab on the left, you will see the Average Conversion Rate of the Conversion Rates over that period of time.
As a general guidance we would suggest relying on the Conversion Rate you see in the Visitor Stats as that's per day and is slightly more accurate.
Should you have any questions, please get in touch with us!