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gray and add pinstripe column dividers in the Format panel, creating the view shown in Fig-
ure 5-14 , with HR labels added.
Figure 5-14. Completed waterfall chart
We've considered part-to-whole relationships in a number of different ways. Now let's con-
sider ways to communicate current values as percentages of historical ones.
Current-to-Historical
New York hit 245 home runs in 2012; that much we know. But how did that home run tally
compare with other teams in their league, and how did it compare with the amount of home
runs they hit the year before? Was it the most in the league, the least, or somewhere in
between? Did they improve their home run tally over 2011 or did they fail to reach the previ-
ous year's mark?
Recalling the data discovery horse race track of Figure 1-1 , these are new questions that have
arisen from data we have already explored and communicated. These questions send us in
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