text: i just dont get precents? buyer bob bought a digital camera for $115, a video camera for $165, and a regular camera for $85. the regular camera costs what percent of the total? percent is just the part divided by the whole, and then that result multiplied by 100 ("percent" is a contraction of "per centum" which literally means "for every 100" -- so we multiply the result per one by 100 to get per 100):  regular camera = $85  total = $115+$165+$85 = $365  percentage = ($85 / $365) * 100 = .233 * 100 = 23.3 %