Changing a cell value by a percentage in the same cell in multiple worksheets

I would like to update my prices in a workbook with multiple worksheets.

So I want to increase cell g12 by 5% and have that value put in cell g12
and I would like it to do that on all worksheets.

How would I do that without having to do manual calculations for each worksheets.
Is there a macro I could do that would change each sheet?

One way:

1) In an empty cell put the number 1.05
2) Copy the cell
3) Click on G12 (or all the cells on the worksheet you want to increase by 5%)
4) Select Edit > Paste Special > Multiply > OK

5) Repeat on other sheets.

To do ALL worksheets with no regard for filtering:

Please Login or Register  to view this content.

If you only want this to occur on specific sheets, list them specifically this way:

Please Login or Register  to view this content.

If you want this to run on all sheets EXCEPT one sheet, then exclude that sheet by naming it specifically:

Please Login or Register  to view this content.