获得2位小数的百分比

Question

Seems simple but can't figure this out:

$goal = 10.000;
$actual = 55.32;

$percentChange = number_format(( $actual / $goal) * 100, 2);

echo  $percentChange;

OUTPUT
553.20

WANTED OUTPUT
0.5532

The problem occurs only when output is less than 1 0.XXXX code is working fine from 1 above.

Answer 1

Remove the dot in $goal variable as is taking it as 10 with 4 decimals

Change this:

 $goal = 10.000;
 $actual = 55.32;

 $percentChange = number_format(( $actual / $goal) * 100, 2);

 echo  $percentChange;

To this:

 $goal = 10000;
 $actual = 55.32;

 $percentChange = number_format(( $actual / $goal) * 100, 4);

 echo  $percentChange;