Percentage Calculator
Calculate percentages, percentage changes, and solve percentage problems.
What is X% of Y?
Percentage Change
QuickBooks
Simplify your business accounting and finances
Important Legal Disclaimer
For Educational and Informational Purposes Only: This calculator provides estimates and approximations based on the information you provide. Results are not exact and should not be relied upon for any official, legal, financial, medical, or professional purposes.
No Professional Advice: The calculations and information provided do not constitute financial advice, legal advice, tax advice, medical advice, or any other form of professional consultation. Always consult with qualified professionals (financial advisors, attorneys, tax professionals, healthcare providers, etc.) before making important decisions.
No Liability: By using this calculator, you acknowledge that the results are estimates only. We make no warranties or guarantees about the accuracy, completeness, or reliability of the calculations. Use of this tool is at your own risk.
This disclaimer complies with applicable U.S. federal and state laws regarding the provision of informational tools and the limitation of liability for educational resources.
Abbreviations Explained
% (Percent): Per hundred; a way to express a number as a fraction of 100.
Percentage Increase: The amount by which a value has grown, expressed as a percentage of the original value.
Percentage Decrease: The amount by which a value has declined, expressed as a percentage of the original value.
Percentage Change: The relative change between an old value and a new value.
Percentage Of: Finding what portion one number represents of another number.
How the Calculation Works
Common percentage formulas:
1. What is X% of Y?
Example: 20% of 150 = (20/100) × 150 = 30
2. X is what % of Y?
Example: 30 is what % of 150? = (30/150) × 100 = 20%
3. Percentage Change
Example: From 100 to 120 = [(120-100)/100] × 100 = 20% increase
Find Percentage Tools & Resources
Explore these helpful financial and educational resources: