I couldn't find any nutritional information on mooncakes, so since I found one, I'm sharing it here. Maybe it'll be representative of similar mooncakes.
185g per serving
100g contains: 437 kcal, 48.7g carbohydrate, 7.1g protein, 23.8g fat.
1 serving contains: 833 kcal, 92.5 g carbohydrate, 134g protein, 45.2g fat.