Chemical Equilibrium

The equilibrium constant for decomposition of
H2O(g) H2O(g)⇌H2(g)+‌

1

2

O2(g)(∆G∘=92.34kJmol−1)
is 8.0×10−3 at 2300 K and total pressure at equilibrium is 1 bar.
Under this condition, the degree of dissociation ( α ) of water is ____ ×10−‌2 (nearest integer value)
[Assume α is negligible with respect to 1 ]