If the price of gas was on average $2.40 per gallon, and this was $1.27 cheaper than a year before, what is the percent of decrease in price? (Round to the nearest percent.)

Alcoa was $10.02 a share yesterday. today it is at $9.75 a share. if you own 50 shares, did ou have capital gain or loss ? how much of a gain or loss did you have ? express the capital gain/loss as a percent of the original price