So in this case what was better? Your 1400% or 125%...
It's all relative to one's site. I have 7 years of Google data and until the Panda 90% of my daily earnings were in the range of 90-110% of average with the balance within 80-120%.
Post Panda I have seen some of my lowest days ever for click volume, ctr, ecpm and some horrible epcs plus my daily earnings' average throughout a month has now gone to 50-150%.
AdSense used to be a fairly stable earner for me, there were one or two issues at times yet they did iron those out, the problems I have seen with it started just before Thanksgiving 2010. I have no idea what they did but they pulverised my earnings whilst traffic remained consistent and I was on the point of pulling AdSense altogether at Xmas however I was "assurred" things would improve and they did much better until Panda 2.1 in May when immediately I went to 45% of previous earnings and there I have consistently stayed.
I'm now at the point of not pulling AdSense but wondering whether to not bother updating sites or even building new ones since the financial impetus is no longer there. Whilst I do not have ecommerce sites I do need to justify to myself as the boss with 7,500 direct employees and probably another 2,500 dependent on me at key producers/suppliers, could my time now be better spent doing something else?
So I've gone off topic a bit, yes percentages do matter if they are from an historically large enough sample and earnings base and I've a board meeting early next month which I will need to present my ideas for the next 5 years...I sincerely hope someone else will have some too!