When a site is not visited on the day you request the info for but if visited the day before this get calculated as 0%.
This should be -100% and not 0%.
See attached screenshot.
Attachment: Screenshot of the wrong informatioN;
Piwik.PNG
@matt: I'm not sure. We have 100% less visitors than the day before when there are 0 visitors today and there where some yesterday right?
In [1808], fixes #1127 - If the number of visits in the current period less than the last period, show a decrease (whether or not the current number is 0).