Are there specific PHP functions or methods that are recommended for handling calculations involving percentages?

When handling calculations involving percentages in PHP, it is recommended to use the built-in functions such as `number_format()` to format the result as a percentage, and `round()` to round the result to a specified number of decimal places. Additionally, you can use basic arithmetic operators like addition, subtraction, multiplication, and division to perform percentage calculations.

// Calculate the percentage of a number
function calculatePercentage($number, $percentage) {
    return $number * ($percentage / 100);
}

$number = 100;
$percentage = 20;

$percentageValue = calculatePercentage($number, $percentage);

echo "The percentage value of $percentage% of $number is: " . number_format($percentageValue, 2) . "%";