This calculator helps you determine the percentage increase between two values, commonly used for understanding price hikes, salary adjustments, or performance improvements. Enter your starting value and your new value to see the rate of increase.
function calculateRateIncrease() {
var startingValue = parseFloat(document.getElementById("startingValue").value);
var endingValue = parseFloat(document.getElementById("endingValue").value);
var resultDiv = document.getElementById("result");
resultDiv.innerHTML = ""; // Clear previous results
if (isNaN(startingValue) || isNaN(endingValue)) {
resultDiv.innerHTML = "Please enter valid numbers for both values.";
return;
}
if (startingValue === 0) {
resultDiv.innerHTML = "Starting value cannot be zero for percentage increase calculation.";
return;
}
var increase = endingValue – startingValue;
var rateIncrease = (increase / startingValue) * 100;
if (isNaN(rateIncrease)) {
resultDiv.innerHTML = "Calculation error. Please check your inputs.";
} else {
resultDiv.innerHTML =
"