I have users which can receive up-votes on their posts. Example: 5 users upvote 2 users downvote. I need to calculate the percentage of positive feedback.
I try with this code:
$result=(($positive-$negative)/$negative);
$r = ($result*100);
$result = $r / 100;
The code above does not work because if i have 50 upvotes and 1 downvote, The percentage results in 49%.
If 50 votes is 100%, you need to calculate percentage for 49 votes. Here is the math:
/* 50(votes) / 100% = 49(votes) / $x% */
$x = 100 x 49 / 50;
Which is 98%
For 5 upvotes and 2 down votes you can use the same logic:
$x = 100 x 3 / 5;
Which is 60%