The oceans make up 70% of the Earth's surface, but only 1% of its volume.

"All of the water on Earth (the oceans, which account for 96.5 per cent, plus groundwater, rivers, lakes, snow and ice) would fit into a sphere about 1,385 kilometres in diameter, according to the US Geological Survey. The Earth's diameter is roughly nine times larger (12,700 kilometres)." Source: http://www.abc.net.au/science/articles/2014/06/04/4018335.htm

So:

Liquid Earth: 1,506,570 cubic kilometers

Total Earth: 126,676,869 cubic kilometers

1,506,570/126,676,896 = 0.011893 (x 100) =

1.189 percent total earth volume.

(Math done by Fictive)