# Percentage controller

The percentage controller is designed to compare the value of each record against the total or the filtered totals within the dataset. This tool allows for a relative assessment of each entry, illustrating its proportion or significance in relation to the overall data or a specified subset. This comparison aids in understanding the contribution or impact of individual records in the context of the entire dataset.

### Features and functionality

{% hint style="info" %}
% controllers are only available for [metrics](/managing-advertising-accounts/modules/cross-module-components/data-tables/data.md#metrics).
{% endhint %}

#### **Aggregate values**

For aggregate metrics such as impressions, clicks, spend, orders, and sales, the % Controller reflects these as a percentage of the total or filtered totals. This feature is useful for quickly assessing the proportion of each metric in relation to the whole dataset.

#### **Ratio values**

When dealing with ratios like ACoS (Advertising cost of sales), CTR (Click-through rate), and Conversion rate, this controller displays a comparative analysis. It indicates how much the value of a record deviates from the average, providing insights into performance relative to the norm.

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### Using the controller

To activate the percentage view click the '%' icon in the [controllers bar](/managing-advertising-accounts/modules/cross-module-components/data-tables/controllers-bar.md).

<div align="left"><figure><img src="/files/fenVl8oVveW7ahl2QI3Z" alt=""><figcaption></figcaption></figure></div>


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