Story-wise there's not much difference. The anime tends to take more time explaining things, the manga has a much faster pace. The art is much better in the manga, I haven't watch every episode of the anime but from what I saw I didn't really like some of the shots, they only really nail the designs in posters or concept art.
Black Clover is not being canceled, they’re letting the magma catch up enough so the anime isn’t filled with filler like Naruto. They’ll be back in a year or two. This isn't actually confirmed but it is likely since the anime does seem to be popular so I'm doubting they're just scrapping it.
Black Clover's animation doesn't "get better". When I say this I mean that the animation doesn't become good then stay that way. It improves on important fight and drops after the fights. Nope it gets more consistent art from episode 60-70.And get slightly better from episodes 80-100.Elf arc was much better.
Why is Black Clover Anime Ending? There could be various reasons as to why Black Clover Anime is ending. The foremost reason is lack of resources.
With only 287 chapters out, Yuki Tabata's manga is only a few events ahead of the anime which is why the makers ended the series. Earlier, a follow-up film was announced prior to the finale episode to bridge the gap between episodes and also to continue the manga.
Usually, an episode of an anime is adapted from 2-4 chapters of a manga, it's quite rare to see an episode adapt a single chapter. But, for Black Clover, the very first arc, known as the Magical Knights Knights Entrance Exam, takes more episodes to tell animated than it does in the manga!
When the official website for the series announced back in early February that Black Clover would end with episode 170, the inevitable conclusion was that the series would have to pull a stunt akin to the main Inuyasha series, where it would just end (because of catching up to the source manga) rather than going out at ...
0:082:02Black Clover Is Ending! Manga Ending Explained - YouTubeYouTubeStart of suggested clipEnd of suggested clipBecause that's already done but the manga is ending soon it is reaching. Its final arc. So accordingMoreBecause that's already done but the manga is ending soon it is reaching. Its final arc. So according to comicbook.com black clover was heading towards a long hectares.