San Francisco (AFP) – Facebook-parent Meta reported Wednesday that its profit more than halved to $4.4 billion in the third quarter from $9.2 billion a year earlier, and said it plans “significant changes” to bolster efficiency in a tough economic environment. The social networking giant, which faces stagnating user numbers and cuts in advertising budgets, also said revenue slipped to $27.7 billion from $29 billion a year earlier. “We’re approaching 2023 with a focus on prioritization and efficiency that will help us navigate the current environment and emerge an even stronger company,” said M…