A percentage calculator is a tool used to perform mathematical operations related to percentages. It is typically used to calculate percentage increase or decrease, calculate percentage of a number, and calculate the original number from a percentage.
For example, if you have a number, say 100, and you want to calculate 20% of it, you can use a percentage calculator to find that 20% of 100 is 20. Similarly, if you know that a price has increased by 20%, and you want to find the new price, you can use the calculator to find that the new price is 120 (100 + 20%).
In the HTML, CSS and JavaScript code I provided earlier, the user can input a number and a percentage, and when the user clicks the "Calculate" button, the JavaScript function will calculate the percentage of the input number and display the result on the webpage.
Percentage calculators can be found in different forms such as online tools, mobile apps, and spreadsheet software. They are widely used in different fields such as finance, business, education and many more.
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