"So if I understand this correctly 100% of these dividends would be taxable in CA?"

It's written as: "...that amount of dividend is exempt from California tax."

I calculate that 100% of that 62.1% is the exempt component for CA that is from Fed sources. The other 37.9% is the taxable component, or perhaps some is from CA sources (muni). I'm pretty sure all funds report these details.