The 80% ???

The 80% Stories
There is a remarkable recurrence of a particular portion in our shared field of interest: 80%. There are many sources for this data, and some might take umbrage at my rounding off their data, but for the sake of argument:

1) 80% of the Southern Resident Orca population diet consists of Chinook (Lynda Mapes would agree with me)
2) 80% of salmon caught in Washington waters are of hatchery origin (proud WDFW statistic)
3) 80% of salmon caught off BC and SE Alaska are reared in Washington and point South (Kurt Beardslee would find this figure low)

Where does that lead a logical person to consider recovering the 8 threatened Chinook runs originating in the Puget Sound?