I have setup a report with a dashboard. I setup the decimal places to 1 on the Callout value of a Gauge. When I open the dashboard in my browser, the value shows correctly. When I open the dashboard on my iPhone, the decimals are wrong.
Value in my browser: 96.7%
Value in my iphone app: 96,7,4%
This occurs not only at a gauge chart but also on 100% bar charts.