"Metals are an excellent conductor of electricity and heat because the atoms in the metals form a matrix through which outer electrons can move freely. Instead of orbiting their respective atoms, they form a sea of electrons that surround the positive nuclei of the interacting metal ions."
Remember that percent means parts out of 100 x/100
discount is the decrease so we divide the decrease by the original total and get 100/5775=0.0173 convert to fraction 0.0173/1 make bottom number 100 multiply by 100/100 1.73/100=1.73% round 2%