True, we do not have such a report yet. This would be a new feature that could be alternatively also developed in a plugin but may be not trivial.

A workaround for now would be to call the API manually and get it as XML, JSON, CSV, ...

http://demo.piwik.org/index.php?module=API&method=Insights.getInsights&reportUniqueId=VisitsSummary_get&idSite=7&period=day&date=yesterday&format=JSON&token_auth=anonymous

From the docs:

• Insights.getInsights (idSite, period, date, reportUniqueId, segment = '', limitIncreaser = '5', limitDecreaser = '5', filterBy = '', minImpactPercent = '2', minGrowthPercent = '20', comparedToXPeriods = '1', orderBy = 'absolute')

In this case it shows two entries. The first entry is yesterday, the second entry is the entry the first entry is compared to (the day before in this case).

To get it eg as CSV specify &format=CSV

+1
this one would also help to get a fast overview of total data #9109

@hpvd I totally agree. With this presentation you have a really fast overview of the visits.

@tsteur Thank you for the workaround. Unfortunately datas from this API call seems wrong.

I get this result from the request you proposed :

[
  {
    "nb_visits":1072,
    "growth_percent":"100%",
    "growth_percent_numeric":"100",
    "grown":true,
    "value_old":0,
    "value_new":1072,
    "difference":1072,
    "importance":1072,
    "isDisappeared":false,
    "isNew":true,
    "isMover":false,
    "isMoverAndShaker":false
  },
  {
    "nb_visits":950,
    "growth_percent":"-100%",
    "growth_percent_numeric":"-100",
    "grown":false,
    "value_old":950,
    "value_new":0,
    "difference":950,
    "importance":950,
    "isDisappeared":true,
    "isNew":false,
    "isMover":false,
    "isMoverAndShaker":false
  }
]

value_old is 0 so growth_percent is 100

It's possible it doesn't really work for *.get reports like VisitsSummary.get since they are a little different from normal reports. It would need to be developed.