What do you mean by "average growth last seven days?" I noticed the growth for the past year was less. Are all the numbers annualized?
It might be good to put the period on the page somewhere.
You can average monthly growth over the last 365 days , but you can't see yearly growth over "all time." Additionally the slider was very clunky feeling (hard to use) on my phone and I suspect all mobile (Android 4.4 w/ Chrome (Nexus 4)).