DAX function

ALLSELECTED — DAX function reference

Respect slicer/outer selection.

Syntax

dax

ALLSELECTED(<table> | <column1> [, <column2>, …] | )

dax

CALCULATE(SUM(Sales[Amount]), ALLSELECTED(Sales[Region]))

→ A number

dax

DIVIDE(SUM(Sales[Amount]), CALCULATE(SUM(Sales[Amount]), ALLSELECTED(Sales)))

→ Percent of the visible (sliced) total, not the whole table

The argument-less form resets to the query's outer filter context rather than a specific table.

dax

CALCULATE([Total Sales], ALLSELECTED())

→ Total for everything currently selected in the report

Use for percent-of-visible-total so slicers still apply.
ALLSELECTED restores the filter in effect outside the visual's own row/column context, not simply 'current slicer state' — its exact behavior depends on the query context Power BI builds for the visual, which can surprise people in matrix subtotal rows.
ALL ignores every filter for a true grand total; ALLSELECTED respects report-level filters/slicers but ignores the visual’s internal grouping — mixing them up is the top cause of a percent-of-total that doesn’t sum to 100%.

From Filter context