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 ...

The percentage difference is usually calculated when you want to know the difference in percentage between two numbers. Microsoft Office Excel is a great tool to help you get started. In this post, we ...

When using chemical formula it is possible to calculate the percentage composition of the chemical. This can be useful when extracting metals from ores or when making fertilisers for specific plants.

Microsoft Excel doesn't inherently possess a percentage function, but a simple formula can calculate the required figure for your business. However, Excel cannot recognize a percentage formula, which ...

Application of formula here is highly important to learn how to calculate the percentage of marks. This formula does not require pen and paper as other formulas do. Percentage Calculation A percentage ...

This post explains how to calculate Weighted Average in Excel with percentages. In a standard arithmetic average where the sum of values is divided by the number of values, each data value is treated ...

Calculating how far a number has declined from one year to the next is pretty easy if you are only considering a one year period. You subtract the current year's number from last year's number, then ...

Accounting terms, formulas and variables are confusing unless you happen to be an accountant or CPA. Most small-business owners are skilled at providing a product or service, but few are experts in ...

Annual percentage rate (APR) is the rate of interest that an investor earns on their money over the period of a year. It's also used to express the annual cost of credit (the rate at which borrowers ...