How to calculate return on investment (ROI), the money an investment made relative to its cost, in Microsoft Excel.

Excel and Google Sheets have three functions to calculate the internal rate of return: IRR, XIRR, and MIRR. Learn how these functions can calculate investment returns.

At the time of the announcement in January, the asteroid’s impact probability was reported to exceed 1%. The impact probability describes how likely a hazardous asteroid is to hit Earth.

A comprehensive guide on how to convert Fractional, Decimal and American odds to percentage and probability with examples. Formula explained.