Linked cells in excel not updating
Numbers formatted as text values are another common reason for Excel formulas not working.At first sight, they look like normal numbers, but Microsoft Excel perceives them as text strings and leaves out of calculations.If that doesn't work, you might have to create a new column, manually input the data (e.g.copy your text-numbers to Notepad, and then back to a new column), and delete the broken column.Some functions also have optional arguments, which are enclosed in [square brackets] in the formula's syntax.
And how do I get my Excel to calculate and update formulas automatically again?
Please see How to highlight and match parenthesis pairs for more information.
All Excel functions have one or more required arguments.
So, whenever you are writing a formula for numerical values, follow this simple rule: don't enclose numbers in double quotes unless you want them to be treated as text.
When using a number in an Excel formula, don't add any decimal separator or currency sign like $ or €.