There are many ways to raise money other than Venture Capital, but looking for information on how do that would lead one to assume that it's 85% of the available capital. This will catalog practices in other ways to get sufficient capital to start new enterprises.
Customer-funded ‘kickstarters’
Family and friends
Family foundations
Program Related Investments from Foundations
Government grants (like SBIR‘s in the US)
Flexible foundations (like Omidyar Network)
JOBS Act-enabled equity crowd-funding (like Wefunder).