In the final stage, what does Scrooge do to show that he's a changed manplease include examples from the text
Following the visits from each of the spirits sent by Marley to spare Ebeneezer Scrooge his own fate, Scrooge wakes to find that it is, in fact, Christmas Day. Inquiring of a boy in the street below as to whether the largest goose is still available, Scrooge offers a handsome payment to the boy to have it delivered to him. Scrooge pays for not only the bird, but also for a cab to take the delivery man and the bird to Camden Town to Bob Cratchitt's home. Not only is Scrooge buying the goose for his clerk's family, he is arranging to do it anonymously. These events alone show a marked difference from the man he was in Staves 1-4.
Scrooge traverses the streets, exchanging pleasantries with strangers, and encounters the charity collector from Stave 1. Following apologies for his previous rude behavior, he offers a large sum to the man for the poor which includes payment for many years previous.
Scrooge visits the home of his nephew, Fred. Despite his nervousness about his reception following their negative encounter in Stave 1, he enters to make amends with Fred and his wife. When they joyously receive him, he stays to dine and play games and enjoys himself tremendously.
Finally, waiting for Bob Cratchitt in the office the next morning, he offers him a raise and tells him to purchase another coal scuttle for himself. He heartily promises to help the Cratchitt family, and indeed, the reader is told that Scrooge became "a second father" to Tiny Tim, "who did not die."
Through his deeds and demeanor, Scrooge becomes known throughout the city as a man filled the Christmas Spirit. These examples show a man much changed from the miserly, bitter man who spurned every utterance of "Merry Christmas" from his fellow man.