# ROI number tiles

An ROI number tile works out the return on investment (ROI) for an amount you've spent, using revenue from your data. You enter the investment, choose a measure for the revenue, and the tile shows the ROI as a percentage.

The tile uses the standard ROI calculation:

> [!NOTE]
>
> **Example use case**
>
> A charity spends £5,000 on a winter appeal mailing. An ROI number tile with an investment of 5,000 and a revenue measure of the donations made to the appeal shows the appeal's return as a percentage of its cost.

## Add a return on investment tile

The tile's **Data** section holds the **Investment** and the **Revenue**.

To add an ROI number tile:

1. [Add a tile](<https://help.apteco.com/en/orbit/dashboards/creating-a-dashboard/#add-your-first-tile>) and choose **ROI Number Card** as the **Tile Type**. It's in the **Basic** group.
2. Under **Data**, enter your **Investment** amount.
3. Under **Revenue**, add a measure for your revenue, such as the sum of donation amounts, and choose its **Function**. For what you can measure, see [Measures](<https://help.apteco.com/en/orbit/dashboards/measures/index.md>).
4. Select **Apply**, then **Save** the dashboard.

For the revenue's other settings, such as **Apply Decimal Places** and **Abbreviate Count**, see [Measure settings](<https://help.apteco.com/en/orbit/dashboards/tiles/tile-editor/#measure-settings>).

## Count revenue from one campaign

To include only the revenue from a particular campaign or appeal, filter the revenue. Either turn on **Apply Filters** for the revenue measure, or add a [tile filter](<https://help.apteco.com/en/orbit/dashboards/filtering/tile-filters/index.md>) to the whole tile.