What is the good and bad in Scrooge's character in A Christmas Carol by Charles Dickens?

In the first stave of the story, Scrooge is presented as being universally bad. He is anti-social, anti-charity, and anti-Christmas. Arguably, the only good aspect of Scrooge's character initially is his belief in working hard. This enabled Scrooge to build a successful business and amass considerable wealth and provide a job for Bob Cratchit. 

The visits of the three spirits, however, completely transform Scrooge's character. For the first time, Scrooge's positive character traits far outweigh the negative ones: he is generous, as shown by his donation to charity and his purchase of the turkey for the Cratchit family. He is also interested in spending time with his family and befriending Tiny Tim. Moreover, Scrooge's change in character is permanent, as we learn in the closing lines:

He became as good a friend, as good a master, and as good a man, as the good old city knew, or any other good old city, town, or borough, in the good old world.