Number format in excel: Showing % value without multiplying with 100

This worked better for me as it turns 0 into 0% (no decimals).

I just use this format code, from excelhow.net:

0\%

You just have to change to a Custom format - right click and select format and at the bottom of the list is custom.

 0.00##\%;[Red](0.00##\%)

The first part of custom format is your defined format you posted. Everything after the semicolon is for negative numbers. [RED] tells Excel to make the negative numbers red and the () make sure that negative number is in parentheses.

Pretty easy to do this across multiple cells, without having to add '%' to each individually.

Select all the cells you want to change to percent, right Click, then format Cells, choose Custom. Type in 0.0\%.

Be aware that a value of 1 equals 100% in Excel's interpretation. If you enter 5.66 and you want to show 5.66%, then AxGryndr's hack with the formatting will work, but it is a display format only and does not represent the true numeric value. If you want to use that percentage in further calculations, these calculations will return the wrong result unless you divide by 100 at calculation time.

The consistent and less error-prone way is to enter 0.0566 and format the number with the built-in percentage format. That way, you can easily calculate 5.6% of A1 by just multiplying A1 with the value.

The good news is that you don't need to go through the rigmarole of entering 0.0566 and then formatting as percent. You can simply type

5.66%

into the cell, including the percentage symbol, and Excel will take care of the rest and store the number correctly as 0.0566 if formatted as General.