## Introduction

In the world of data analysis and finance, understanding percentage drops is crucial. Whether you’re tracking stock market trends, analyzing business performance, or simply curious about changes in a value, a percentage drop calculator can be a handy tool. In this article, we’ll guide you through creating an HTML-based percentage drop calculator, ensuring simplicity and functionality.

## How to Use

Certainly! Here’s a simplified, code-free guide on how to use the HTML percentage drop calculator in just three easy steps:

#### Open the Calculator

Begin by opening the HTML percentage drop calculator. You can access it through your preferred web browser. If the calculator is embedded on a website, simply navigate to the page containing the calculator.

#### Enter Initial and Final Values

Once the calculator is open, you’ll see input fields labeled “Initial Value” and “Final Value.” Enter the numerical values for the initial state and the final state you want to compare. For example, if you’re analyzing a stock’s performance, the initial value might represent the opening price, and the final value would be the closing price.

#### Click “Calculate Percentage Drop”

After entering the initial and final values, locate the “Calculate Percentage Drop” button. It is typically a clickable button or an interactive element on the page. Click on this button, and the calculator will instantly compute the percentage drop based on the provided values.

## Formula

The formula to calculate percentage drop is:

$Percentage Drop=(Initial ValueInitial Value−Final Value )×100$

## Example

Let’s say you are monitoring the stock performance of a company, and you have the following data:

- Initial Stock Price: $150
- Final Stock Price: $120

The calculator will process the input values and display the result on the page. For this example, the percentage drop would be calculated as follows:

$Percentage Drop=(Initial ValueInitial Value−Final Value )×100$

$Percentage Drop=(150− )×100$

$Percentage Drop=(15030 )×100$

$Percentage Drop=0.2×100$

$Percentage Drop=20%$