Why has my direct traffic gone down?

[Flex]

So before the redesign of a client site, they were seeing approximately 1900 (85% unique) visitors via direct traffic. After the redesign, we've seen an unbelievable spike in traffic, but the direct traffic has gone down tremendously from the 1900 to about 350 visits (80% unique). While we're seeing great results, it just doesn't make sense to me that it has decreased. Any thoughts?

 

[Eagle41]

Google hates small business.