ntage is a way of expressing a number as a fraction of 100 (per cent meaning “per hundred”). It is denoted using percent sign, “%”. This concept is USEFUL for comparison of fractions as all the fractions are indexed to 100 when converted to PERCENTAGES. Any percentage can be expressed as a fraction or a decimal fraction and vice versa.For example, fractions such as 2/5 can be written as 0.8 or 80% and vice versa. Percentage Value = Fractional Value x 100 Important Percentages Formulas & ConceptsHere are some very important Percentages formulas and concepts to solve various percentages BASED problems. 1) Percentages Formulas for Percentage increase or decreasePercentage increase or decrease of a quantity is the percent representation of the ratio of the actual (absolute) increase and decrease to the original quantity.percentages formulas for percentage increase decreaseExample: If the price of an idly is increased from Rs. 25 to Rs. 35, the percentage increase in the price can be computed as Percentage change = (10/25)*100 = 40% 2) Percentages Formulas for MULTIPLICATION FactorWhenever there is any percentage increase or decrease in a quantity, instead of calculating the actual increase/decrease and then adding to/subtracting from the original quantity, we can directly compute the NEW quantity by using the concept of the multiplication factor.For every percentage increase or decrease, a number called multiplication factor can be calculated which when multiplied by the original quantity will give the increased quantity.Mark me as brainlist__"__"__!!!!!!