Scientific American presents Math Dude by Quick & Dirty Tips. Scientific American and Quick & Dirty Tips are both Macmillan companies. Long time math fans may remember our first foray into the world ...

If you are using Microsoft Excel to manage numerical data, at some point you're inevitably going to display percentages. Doing so can give you a new insight, or make summarizing heaps of data a bit ...

Calculating profit as a percentage of revenue shows relative profitability, like Apple's 30.5% vs Fitbit's 20.5%. Common size income statements allow comparisons across companies and time by ...

Calculate average percentage difference by subtracting, then dividing price differences. Average percentage difference helps foresee market trends and irrational periods. Understanding this metric can ...

Most companies sell their products on credit, for the convenience of the buyers and to increase their own sales volume. The term bad debt refers to outstanding debt that a company considers to be ...

A retail business buys finished goods from suppliers and manufacturers and sells them to consumers and businesses. Retailers may also assemble or manufacture products for resale. Financial ratios ...

One way to find a percentage of an amount is to use 1%, 10% and 50% as building blocks. 1%, 10% and 50% can be used as building blocks for working out percentages in your head. 1% is 1⁄100. Work out 1 ...