**Introduction**

In the realm of academic evaluations, calculating percentages is a fundamental task. Whether you’re a student determining your final exam score or a teacher computing grades, having a reliable calculator is indispensable. In this article, we’ll guide you through creating a simple yet powerful percentage calculator using HTML and JavaScript.

**How to Use**

To employ the calculator, input the original value and the percentage you wish to calculate. Click the “Calculate” button, and the result will be displayed instantly. The intuitive design ensures a user-friendly experience.

**Formula**

The formula for calculating a percentage is straightforward:

$Percentage=(WholePart )×100$

Where:

- Percentage is the result we seek.
- Part is the value we want to find the percentage of.
- Whole is the total value or the original amount.

**Example**

Let’s say you want to find 25% of 80. Applying the formula:

$Percentage=(8025 )×100$

$Percentage=0.3125×100=31.25%$

The calculator simplifies this process, making it efficient and error-free.

**FAQs**

**Q: How accurate is the percentage calculation?**

**A:** The calculation is highly accurate, utilizing precise formulas to ensure correctness.

**Q: Can I use decimals for input values?**

**A:** Yes, the calculator accommodates decimal values for both the original value and percentage.

**Q: Why is the result displayed with two decimal places?**

**A:** The two decimal places enhance clarity and precision in the displayed result.

**Conclusion**

Creating a percentage calculator using HTML and JavaScript offers a practical solution for quick and accurate calculations. This tool proves invaluable in various educational scenarios, aiding both students and educators in their assessment endeavors.