The state has their own PS employees, and pay 20% of their spending in PS employee comp.
The local governments have their own PS employees and pay 55% of their budget in PS employee comp
Combined, 44% of the state's and local's spending is on PS employees.
If you are looking at how much PS unions are costing the state, you need to look at expenses from both a state and local level. You can't just take the state's spending on their PS employees and completely ignore the local's spending on their employees.