Winning percentage

Here is an interesting one.
What are the overall winning percentages of all sanfl teams?
Im thinkin of the competition in the last 20 years since the eagles merger or overall from 1877(could be tough) to present
What are the overall winning percentages of all sanfl teams?
Im thinkin of the competition in the last 20 years since the eagles merger or overall from 1877(could be tough) to present