Math help please with data graphs

1) What was the percent of decrease for Country A from 2005 to 2006?
tinypic . com/r/2jfm2p1/5

6%

20%

23%

32%

ans is 23%

take 26-20=6[decrease]
to find percentage of decrease take decrease/original x 100
so take 6/26x100%=23%

23%
2005 graph is 25
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the answer is 23%