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Percentage Calculator
Calculate percentages of numbers, percentage increases/decreases, and relative ratios.
1. What is X% of Y?
What is
% of
?
Result:
30
2. X is what percentage of Y?
is what % of
?
Result:
25%
3. Percentage Change: from X to Y
From
to
Percentage Change:
+50% (Increase)
How to Use Percentage Calculator
1
Select Calculation Mode
Choose whether you are calculating a percentage, a proportion, or an increase/decrease.
2
Input Numbers
Enter your two values.
3
Get Answer
The answer and calculation steps display immediately.
Features & Capabilities
Mode 1: What is X% of Y?
Mode 2: X is what percentage of Y?
Mode 3: Percentage increase or decrease from X to Y
Step-by-step mathematical explanation provided for each result
Frequently Asked Questions
Subtract the original value from the new value, divide by the original value, and multiply by 100.