I'm not even sure if I need to since I often see statistics on website and blog posts without a source. Do I need to? And how should I do it?
From what I've seen when the source is mentioned, people usually do it one of these ways:
Blah blah blah 922% (Name of source)
Blah blah blah 12312% (Name of source, Year Published)
Which of those are correct? And do I need to do something different if I reword the statistic?