What Numbers Really Say
About this lesson
A digital marketing director presents the results of a website redesign at a quarterly review. "Our conversion rate increased from 2 percent to 3 percent," she announces. "That's a 50 percent improvement." The room reacts well. The CFO, however, is not certain whether to be impressed. Is this an enormous win deserving of additional investment, or is it a modest one being dressed up in flattering language? Both descriptions of the same change "an increase of one percentage point" and "an improvement of 50 percent" are mathematically correct. They produce dramatically different impressions, and they are likely to drive dramatically different decisions. This is not a contrived example. The dual framing of small percentage changes as either small in absolute terms or large in relative terms is one of the most consistent sources of confusion in business communication. The person presenting the number almost always has a preference about which framing makes the case more strongly, and the choice is usually invisible to the audience unless someone is paying close attention. Learning to notice which framing is being used, and to ask for the other one, is one of the most reliable ways to keep yourself from being misled by percentages.
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