Posted in
3475
12:13 am, March 22, 2019
calculate a percentage (dec) difference based on two numbers
this function will show you the percentage difference between two numbers
PHP
// calc_percentage_dec.php
$template_result = "";
// function - calc_percentage_dec($total, $diff)
function calc_percentage_dec($total, $diff) {
$dec = $total - $diff;
return $dec_percent = ( $dec / $total ) * 100;
}
// Usage examples, as shown in demo.:
// total
$total = 2406;
$diff = 356;
// % difference
$perc_diff = calc_percentage_dec($total, $diff);
$perc_diff_rounded = number_format($perc_diff, 2);
$template_result .= "<p>The percentage difference between <b>$total</b> and <b>$diff</b> is <b>$perc_diff%</b></p>";
$template_result .= "<p>You can round this number down using number_format($perc_diff, 2) which should give you <b>$perc_diff_rounded</b></p>";
// and another more simple one to test the numbers are calculating correctly
// total
$total = 100;
$diff = 50;
$perc_diff = calc_percentage_dec($total, $diff);
$template_result .= "<p>The percentage difference between $total and $diff is: $perc_diff%</p>";The percentage difference between 2406 and 356 is 85.20365752286%
You can round this number down using number_format(85.20365752286, 2) which should give you 85.20
The percentage difference between 100 and 50 is: 50%
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