which consumes lebih internet/data? downloading atau streaming?

It`s +/- same amount of data. Everything really comes down to several factors:
*are anda going to watch the file lebih than once? (If yes, downloading is the best option. If no, then streaming might be lebih efficient)
*does quality of the file matter? (e.g. if anda download file, it will be in the quality it is, while anda can adjust quality and stream it in lower resolution, therefore using less data)
*do anda have a lot of free luar angkasa for file storing? (If the luar angkasa on anda computer/phone is huge, anda can surely store downloaded files on there. But if anda may run out of storage, better option would be to stream.)
If quality would be same, storage doesn`t matter and you`re going to watch it only once, then downloading it to your computer vs streaming(technically just downloading it temporarily in your web cache) would take up equal amount of data. :)