# Weight Loss Percentage

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**Formula:**`Percentage Loss = ((Starting Weight - Current Weight) / Starting Weight) × 100`

## Introduction to Weight Loss Percentage Calculator

The weight loss percentage is calculated by subtracting the current weight from the starting weight, then dividing the result by the starting weight and finally multiplying by 100 to get the percentage. A positive percentage indicates weight loss, while a negative percentage indicates weight gain.

## Parameters:

`startingWeight`

: Starting weight of an individual`currentWeight`

: Current weight of an individual

## Data Validation:

Both starting weight and current weight should be positive numbers.

## Output:

`Percentage Loss`

: Percentage of weight loss

## Summary

This calculator provides the percentage of weight loss based on the starting and current weight of an individual. It is commonly used in fitness and healthcare to track weight loss progress.

Tags: Health, Weight Loss, Fitness, Percentage