Write a function `sort_dict_by_value` that takes a dictionary as input and returns a list of tuples, where each tuple contains a key-value pair from the dictionary, sorted in descending order by the values.
#### Example Usage
```python [main.nopy]
result = sort_dict_by_value({'Math': 81, 'Physics': 83, 'Chemistry': 87})
print(result) # Output: [('Chemistry', 87), ('Physics', 83), ('Math', 81)]
result = sort_dict_by_value({'A': 1, 'B': 3, 'C': 2})
print(result) # Output: [('B', 3), ('C', 2), ('A', 1)]
```