Thinking Mathematically (6th Edition)

We can find the decrease from the regular price to the sale price. $\$840 -\$714 = \$126$We can express this decrease as a decimal of the regular price.$\frac{\$126}{\$840} = 0.15$To express a decimal as a percent, we can move the decimal point two places to the right.$0.15 = 15\%\$ The percent decrease of the sale price from the regular price is 15%