An event donation is considered when when a cost is entered in for the registration option. For example, if $1000 is the registration and a $400 cost is entered, $600 will be the receipt amount. This is also the amount that is considered the donation amount. 

When the KPI is run, $400 is considered for the registration and $600 for the donation.

**One prerequisite is that the event has to allow designations on events and has to be setup with a designation.