[tex]Percentage \: decrease = \frac{decreas \: in \: price}{Original \: price} \times 100[/tex]
Yesterday's price is the original price or the old price.
[tex]Percentage \: decrease = \frac{9.61 - 9.54}{9.61} \times 100[/tex]
[tex]Percentage \: decrease = \frac{0.07}{9.61} \times 100[/tex]
[tex]Percentage \: decrease = \frac{700}{961} = 0.728[/tex]%
Rounding to the nearest tenth means round to one decimal place.
This will give us,
0.7% decrease in price.
Therefore between yesterday and today, there was a 0.7 percentage decrease in price.
