Comparison

(Optional and for analytics endpoints only)

In the case of the comparison parameter, if it’s set to true, the response will include a percentage change compared to the previous date. The previous date is a specific time period before the selected range. 

For example, if the current date range is set to one month, the previous date will be the preceding month.

comparison=1

Note: This parameter is only applicable to the analytics endpoint and cannot be used in conjunction with grouping parameters. If both grouping and comparison are used, the comparison parameter will be skipped.

Example: [Link]