Based on what period revenue is calculated depends on the period range you are analyzing to determine.
If the comparative analysis is annual, the revenue is cumulative annual revenue. This includes a comparative analysis of the current year's cumulative year ending at the end of the reporting period within the year compared to the same period in the previous year.
If the comparative analysis is monthly, income is for the current month. There are comparisons between the current month and the previous month, comparisons between months within the year, etc.
The chart is analyzed on a quarterly basis, and the income is definitely for the current quarter. There are comparisons between quarters, etc.
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