Budget > Revenues: Revenues calculated on an exchange rate basis, i.e., not in purchasing power parity (PPP) terms ; Budget surplus > + or deficit > -: This entry records the difference between national government revenues and expenditures, expressed as a percent of GDP.A positive (+) number indicates that revenues exceeded expenditures (a budget surplus), while a negative (-) number indicates Percentage calculator, formula, work with steps, step by step calculation, real world and practice problems to learn how to find what is X percent of Y. In a percent proportion, one of the numbers is called the part and it is compared to the whole magnitude, named the base. where rate is the ratio that the percent represents. A changes This percentage calculator is a tool that lets you do a simple calculation: what percent of X is Y? The tool is pretty straightforward. All you need to do is fill in two fields, and the third one will be calculated for you automatically.