Adding Percentages Using Excel. Microsoft Excel allows you to quickly add percentages to a series of numbers without performing each calculation by hand.

Creating an Excel Sales Tax Formula Excel doesn't have a built-in sales tax formula, but adding one is only a matter of multiplying your price by the tax rate.

These strategies help me write advanced Excel formulas without breaking a sweat. Excel mastery is about developing good habitsâ planning, organizing, and using the right tools make all the ...