Complete guide to Percentage for competitive exams: basic definition and concept (percent means per hundred), converting fractions to percentages and percentages to fractions, percentage increase and decrease formulas, finding percentage of a number, calculating percentage change (increase or decrease), successive percentage changes (two or more percentage changes), percentage change in area/volume (effect of change in dimensions), profit/loss percentages, discount percentages (single discount, successive discounts), tax percentage calculations, percentage distribution in data interpretation, percentage based population problems, election and votes percentage problems, income and expenditure percentage problems, salaries percentage problems, percentage error and applications, and shortcut tricks for SSC, Banking, Railway, UPSC, and other government exams.