By Elizabeth Culliford and Nivedita Balu (Reuters) – Facebook owner Meta Platforms Inc’s shares plunged more than 20% late on Wednesday after the social media company posted a weaker-than-expected forecast, blaming Apple’s privacy changes and increased competition for users from rivals like TikTok. Facebook’s global daily active users declined from the previous quarter for the first time, to 1.929 billion from 1.930 billion. Meta said it faced hits from Apple Inc’s privacy changes to its operating system, which have made it harder for brands to target and measure their ads on Facebook and Inst…