The computer only understands 0 and 1. It understands 0 as On and 1 as Off. It is the only things that they can interpret in which they use it to identify different things like images, sounds, the alphabets and so many other things.
Price of a bag of fertilizer increased from $8 t0 $15 thus the price increase = $7 % increase = 7/8 * 100 = 87.5% in decimal = 0.875 divide by 100 in fraction = 875/1000