MS Excel
A numeric value can be treated as a label value if it precedes with

Hash (#)
Apostrophe (')
Exclamation (!)
Ampersand (&)

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MS Excel
When all the numbers between 0 and 100 in a range should be displayed in Red Color, apply

All of above
Apply Conditional Formatting command on Format menu
Use =if() function to format the required numbers red
Select the cells that contain number between 0 and 100 then click Red color on Text Color tool

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