How calculate gdax 24 hours percentage

Question

How can I fetch the GDAX 24 hours percentage for each products?

Should I request current price and current-24hours price and process the difference ? Or is there a better way ?

Answer 1

This is how I do it...

$stats = fetchFromGDAX("/products/$product-USD/stats");
$x = round((($stats['last']-$stats['open'])/$stats['open'])*100,3);

( fetchFromGDAX() is my function to handle the API call )

This returns something like... -3.394%