Percentage: Basic Growth and Successive Changes Percentage is a measure used to represent the relative size or amount of something compared to something...
Percentage is a measure used to represent the relative size or amount of something compared to something else. It tells us how much more or less a particular value is compared to another.
Basic Growth:
Percentage growth means the value increases by a fixed percentage.
Ex: If the price of a product increases by 10%, its new price is 110%.
Percentage growth is indicated by a symbol like '+' or **'% increase'.
Successive Changes:
Percentage decrease: When a value decreases by a specific percentage, it becomes smaller.
Ex: If a shirt costs 20 dollars and decreases by 10%, it becomes 18 dollars.
Percentage decrease is indicated by a symbol like '−' or **'% decrease'.
How to Calculate Percentage Change:
Calculate the difference between the two values.
Divide the difference by the original value.
Multiply the result by 100 to express it as a percentage.
Examples:
If the original price of an item was 20 dollars and it increases by 10%, its new price is 22 dollars.
If a shirt costs 10 dollars and decreases by 50%, its new price is 5 dollars.
A company earns 30% more than they did the previous year.
Key Points:
Percentage tells us the relative size of a value compared to another.
Growth indicates an increase, while decrease indicates a decrease.
Percentage change is calculated by finding the difference, dividing by the original value, and multiplying by 100