Percentage Change: A Formal Explanation Percentage change tells us how much a number changes relative to its original value. This can be calculated in variou...
Percentage change tells us how much a number changes relative to its original value. This can be calculated in various ways, depending on the context.
Calculating percentage change:
Initial value (Vi) represents the starting number.
Final value (VF) represents the ending number.
Percentage change (PC) is calculated using the formula:
PC = (VF/Vi) * 100%
Examples:
(30/20) * 100% = 150%
This means that the number increased by 10 units represents a 150% increase.
(90/100) * 100% = 90%
This means that the number decreased by 10 units represents a 90% decrease.
Additional points:
Positive percentage changes indicate an increase, while negative percentage changes indicate a decrease.
The percentage change is always expressed as a percentage, with the decimal point being placed after the percentage symbol.
Percentage change is particularly useful in analyzing changes in prices, profits, and discounts