What is the percentage change from 100 to 80?
How much has the value changed from 100 to 80? Let's calculate the percentage increase or decrease.
Result
20.00% Decrease
From 100 to 80 = 20.00% Decrease
Mathematical Formula
Detailed Explanation
Step 1: Calculate the Difference
Subtract the original value from the new value:
Step 2: Divide by Original Value
Divide the difference by the absolute value of the original number:
Step 3: Convert to Percentage
Multiply by 100 to get the percentage:
Real-World Example
If a product's price decreases from $100 to $80, it represents a $20.00% price reduction.
Real-World Applications
Finance
If an investment grows from $100 to $80, it has earned a $20.00% return.
Discounts
When an item's price drops from $100 to $80, you save $20.00% off the original price.
Growth
If a population grows from 100 to 80, this represents a 20.00% growth rate.
Statistics
When a value changes from 100 to 80, the percentage change helps compare relative differences.
Salary
If your salary increases from $100 to $80, you've received a $20.00% raise.
Healthcare
If hospital admissions decrease from 100 to 80, it shows a 20.00% reduction in cases.
Education
If test scores improve from 100 to 80, students have achieved a 20.00% improvement.
Business
If sales increase from $100 to $80, your business has grown by $20.00%.
Technology
If download speeds increase from 100 to 80 Mbps, your connection is $20.00% faster.