Year-over-Year Comparison in Zoho Analytics is a reporting technique that places the same metric from two or more different years side by side for the same period, allowing direct performance comparison while accounting for seasonal patterns.
Use Year-over-Year Comparison when your reporting or data needs go beyond standard defaults. This feature suits organisations working with multiple data sources, varied user groups, or specific business logic. Always confirm with your Workspace Administrator before making changes that affect shared reports used by other teams.
Ensure underlying tables are clean and consistently structured before configuring Year-over-Year Comparison. Test on a duplicate report before applying changes to production dashboards. For high-traffic workspaces, schedule configuration changes during off-peak hours to avoid disrupting active users.
Year-over-Year (YoY) Comparison shows a metric for the current period alongside the same period in the previous year. For example, comparing October 2024 revenue with October 2023 revenue eliminates seasonal effects and shows true growth or decline.
The most common method is to use YEAR() in a formula column to extract the year, then build a Pivot Table or grouped bar chart with Month on the X axis and Year as the colour dimension. Alternatively, create two Aggregate Formula columns filtering the current and prior year, then display both on a Combo Chart.
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