Percentage Formula: Know How to Calculate Percentage in Excel along with Solved questions and examples and Download formula PDF list.

To calculate residual value, start with the asset's original purchase price. This is the amount paid when the asset was new, such as the cost of a car, machine, or piece of equipment.

To calculate a price-weighted average, or any arithmetic average for that matter, add the numbers (stock prices) together and divide by the number of stocks in the average.