Rate of Percent Calculator
This calculator helps you determine what percentage one number is of another.
Rate of Percent Calculator
Let's calculate the "Rate of Percent" which helps determine what percentage one number is of another. This is a fundamental concept in mathematics and has wide-ranging applications.
**Understanding the Rate of Percent**
The rate of percent, often simply called the "percentage," answers the question: "What part of a whole is this specific amount?" The formula to calculate this is:
Percentage = (Part / Whole) * 100
Where:
* **Part:** The specific amount you are interested in.
* **Whole:** The total or original amount.
* **Percentage:** The result, expressed as a value out of 100.
For example, if you want to know what percentage 20 is of 80, you would calculate (20 / 80) * 100 = 25%.
**How to Use the Calculator**
1. **Enter the "Part":** Input the specific number or amount you want to find the percentage of.
2. **Enter the "Whole":** Input the total or original number or amount.
3. **Click "Calculate Percentage":** The calculator will then display the result as a percentage.
**Example**
Let's say a student scored 45 points on a test where the maximum possible score was 60 points. To find out what percentage of the test they answered correctly, we would use the calculator:
* Part: 45
* Whole: 60
Clicking "Calculate Percentage" would show that the student scored 75%.
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button:hover {
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function calculatePercentage() {
var partInput = document.getElementById("partValue");
var wholeInput = document.getElementById("wholeValue");
var resultDiv = document.getElementById("result");
var part = parseFloat(partInput.value);
var whole = parseFloat(wholeInput.value);
if (isNaN(part) || isNaN(whole)) {
resultDiv.innerHTML = "Please enter valid numbers for both Part and Whole.";
return;
}
if (whole === 0) {
resultDiv.innerHTML = "The Whole cannot be zero.";
return;
}
var percentage = (part / whole) * 100;
resultDiv.innerHTML = "Percentage: " + percentage.toFixed(2) + "%";
}