Total automobile production in the year
2004=800+500+475=1775Total automobile production in the year
2005=700+550+450=1700
Total automobile production in the year
2006=1025+675+475=2175Total automobile production in the year
2007=1200+650+475=2325Total automobile production in the year
2008=1250+600+350=2200We can see that production decreased only twice during the given period in the year 2005 and 2008
Hence, the percentage decrease in the year 2005 over the year
2004=×100=4.225percent
Similarly, the percentage decrease in the year 2008 over the year
2007=×100=5.376percent