That 70% is not a meaningful number though. If you run a country and divide its resources into 2 equal parts, privatize half and nationalize half, and run the nationalized half into the ground while the private sector thrives, now your economy is 90% private despite the fact that the private half only has access to half of its available resources. The productivity of state run enterprises in Venezuela has been utterly abysmal.

You can't really quantify how "socialist" a country is using a single number, but Venezuela falls short of European nations on all metrics relating to economic freedom in the private sector. Things like how easy it is to start a business, invest money, move your currency around, whether there are significant subsidies, price controls, regulations...etc.