Calculate percentage between two numbers?-CodePudding

I have these two numbers original one is 1000 the new one is 440

I need to calculate the percentage between them as follow:

1000 
440

The percentage that getting is 44% and left is 56%

my helper function:

function calculatePercentage($original, $given)
{
    $percentChange = (($original - $given) / $original) * 100;

    return round(abs($percentChange)) . '%';
}

This gives me the reset percentage!

CodePudding user response：

use this

    function calculatePercentage($original, $given)
    {
        $percentageOfGiven = round(abs( ($given * 100) / $original ));

        return [
            'getting' => $percentageOfGiven . '%',
            'left' => (100 - $percentageOfGiven) . '%'
        ];
    }

The output will be like [ 'getting' => "44%", 'left' => "56%"] .

The principle used is that if the original is 100% then what would be the given value.

CodePudding user response：

Wouldn't it be like

function calculatePercentage($original, $given)
{
    $percentChange = ($given / $original) * 100;

    return round(abs($percentChange)) . '%';
}

If I am wrong, I probably didn't understand ques enough