You can see the progress that has been achieved on a metric and how that progress relates to a target, across three horizons:
Period
Progress achieved between two deadlines (when today’s date does not fall between those deadlines)
Or progress achieved since the most recent deadline until today and how that relates to the target of the upcoming deadline (when today's date does fall between two deadlines)
Annual
(When today's date does not fall between the two year start dates) The progress achieved between two Year Start Dates
Or the progress achieved since the most recent Year Start date and today's date; and how that progres relates to the cumulative target for the upcoming year start date
All-Time
When in table view on a project page or album page: The progress achieved on that metric between the start of the project and the deadline date of that column; and how it relates to the cumulative all time target on that deadline date
When in list view or strategy view on a project page or album page: The progress achieved on that metric between the start of the project and today's date; and how that relates to the upcoming cumulative all-time target
When on a progress board: The progress achieved between the start of the project and today's date (or in the date range as set by the Story/Timeline Filters); and how it relates to the upcoming cumulative all-time target