Delete cell content in Numbers on Mac
Clear content from cells
Select the range of cells you want to clear.
Do one of the following:
Remove the content but preserve the cells’ data format, text style, and cell style: Press Delete.
Remove all data, formatting, and styling: Choose Edit > Clear All (from the Edit menu at the top of your screen).
Tip: If a cell contains text and an object, you can only delete the object without deleting the text.