Although STW is listed on the ASX, it is a managed fund. Under the legislation governing managed funds, it is a flow through entity, ie there are no reserves which can apply to companies, and the manager can only take their fee from the income, not capital.
Suppose for the year the fund received fully franked dividends totaling $70. The attached franking would be $30. The manager can take its fee (say 3%) from the $70 leaving $67.9. That amount together with the $30 franking credit is passed on to you so, as a percentage, the franking credit is higher.
As to the 64.9348%, that is the percentage of total income received as franked dividends. So you would need to multiply the cash distribution of 71.2901 cents by that percentage and work from there.
I wouldn't sweat on it though as STW sends a detailed statement showing, for you, the exact amounts in dollar terms.
And by the way, in case you are not already aware of it, although you receive the distribution in the 2010/2011 tax year, distributions from managed funds need to be included in your tax return for the year in which they accrued, ie you need to include the details in your 2009/2010 tax return.
Hope this assists you.