You would do 203-140=63 then you are finding the percent increase from 140 so you need to find out what percent of 140 is 63 so 63/140=.45 so it is a 45% increase
At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase