The following table shows the volumes of items sold by Clyde's Auto Parts during the past two years. Compute the amount of change and the rate of change between this year and last year. Compute the rates to the nearest tenth of a percent. If the amount and rate are increases, write a + in front of them; if they are decreases, enclose them in parentheses().

Clyde's Auto Parts Volume Sold (number of units)
Description of Item	This Year	Last Year	Amount of Change	Rate of Change
Mufflers	1,430	1,100		%