---
title: MetricsInsight.Populations
framework: appstoreconnectapi
role: symbol
role_heading: Object
path: appstoreconnectapi/metricsinsight/populations-data.dictionary
---

# MetricsInsight.Populations

The value of a metric for a device type on the latest app version, and its percent change as compared with previous app versions.

## Declaration

```data
object MetricsInsight.Populations
```

## Properties

device: The device type. deltaPercentage: The percentage increase between the values of latestVersionValue and referenceAverageValue. latestVersionValue: The value of the metric for the latest version of the app. referenceAverageValue: The average value of the metric for all reference app versions. percentile: The percentile of users that are affected by this metric value. For example, the 50th percentile represents a typical user experience, and the 90th percentile represents the highest or lowest numbers, depending on the metric. summaryString: A human-readable description of the metric and population.