Select the cell or text you want to strike through
Press Ctrl + 5 on Windows
Press Command + Shift + X on Mac
Right-click the selected cell and choose Format Cells
Go to the Font tab
Check Strikethrough
Click OK
For partial text in a cell, double-click the cell or press F2
Highlight the specific text
Apply the strikethrough shortcut or use Format Cells
Use the Home tab, then open the Font dialog box launcher
Check Strikethrough in the Font settings
Click OK