Percentage means 'per hundred'. It is a way of expressing a number as a fraction of 100. For example, 45% means 45 out of every 100. Percentages are used everywhere ā from profit and loss calculations to data interpretation.
Key Formulas
Basic Percentage
Percentage = (Value / Total) Ć 100
Use this to find what percentage one number is of another.
Value from Percentage
Value = (Percentage Ć Total) / 100
Use this when you know the percentage and need the actual value.
Percentage Change
Change% = [(New - Old) / Old] Ć 100
Positive = increase, Negative = decrease.
ā” Shortcut Tricks
#1
Basic: Percentage = (Value/Base) Ć 100. To find value: Value = (Percentage Ć Base) / 100.