Reports to compare YOY statistics?

You can use the advanced survey reports and conversational support reports to analyze data for specific time periods and then filter the data by date range and compare the results manually to get insights on YOY statistics.

For NPS Survey Data, you can find the advanced survey report in the Responses report tab within the survey itself. Keep in mind that this information may not provide a direct YOY comparison, but it can help you analyze the data for different time periods.