Calculating the percentage of a raise is a fundamental aspect of understanding your compensation changes. It helps you quantify how much your income has increased relative to your previous earnings. This metric is crucial for financial planning, salary negotiations, and comparing job offers.
The formula used by this calculator is straightforward and designed to provide clarity on your salary adjustment.
The Calculation Formula
To determine the raise percentage, we use the following formula:
Raise Percentage = ((New Salary – Current Salary) / Current Salary) * 100
Current Salary: This is your base salary before the raise.
New Salary: This is your salary after the raise has been applied.
Difference: We first calculate the absolute increase in salary (New Salary – Current Salary).
Ratio: This difference is then divided by your Current Salary to find the raise as a proportion of your original pay.
Percentage: Finally, multiplying by 100 converts this proportion into a percentage.
When is this Calculator Useful?
Annual Reviews: After your performance review, you'll know exactly how significant your pay increase is.
Job Offers: When comparing multiple job offers, calculating the raise percentage against your current salary can highlight the true value of each offer.
Salary Negotiations: Understanding the percentage change can strengthen your position when negotiating for a higher salary.
Financial Planning: Knowing your percentage raise helps in budgeting and making informed financial decisions.
Example Scenario:
Let's say your Current Salary was $50,000 and you received a raise, making your New Salary $55,000.
Difference: $55,000 – $50,000 = $5,000
Ratio: $5,000 / $50,000 = 0.10
Raise Percentage: 0.10 * 100 = 10%
In this scenario, you received a 10% raise. This calculator automates this process for any salary figures you input.
function calculateRaisePercentage() {
var currentSalaryInput = document.getElementById("currentSalary");
var newSalaryInput = document.getElementById("newSalary");
var resultElement = document.getElementById("raisePercentageResult");
var currentSalary = parseFloat(currentSalaryInput.value);
var newSalary = parseFloat(newSalaryInput.value);
var raisePercentage = 0;
var resultText = "– %";
var resultClass = "";
if (isNaN(currentSalary) || isNaN(newSalary)) {
resultText = "Please enter valid numbers";
resultClass = "negative";
} else if (currentSalary < 0 || newSalary 0) {
resultText = "Infinite % (from zero)";
resultClass = "negative"; // Using negative color for 'special' cases
} else {
resultText = "0.00 %";
resultClass = "zero";
}
} else {
var difference = newSalary – currentSalary;
raisePercentage = (difference / currentSalary) * 100;
resultText = raisePercentage.toFixed(2) + " %";
if (raisePercentage > 0) {
resultClass = "positive"; // Not explicitly styled, defaults to main text color
} else if (raisePercentage < 0) {
resultClass = "negative";
} else {
resultClass = "zero";
}
}
resultElement.textContent = resultText;
resultElement.className = resultClass; // Apply class for styling
}