100 percent of 860 is 860.
1 percent of 860 is 1/100 X 860 = 8.6
For this you need to set up two fractions. 688/860 = x/100 (for the percentage). Cross multiply (688x100=68800) and divide it by 860. that should give you 80, which means you are paying 80% of 860, giving you a 20% discount.
ten percent of 860 is 86 86
55% of 860= 55% * 860= 0.55 * 860= 473
85% of 860= 85% * 860= 0.85 * 860= 731
40% of 860= 40% * 860= 0.4 * 860= 344
35% of 860:= 35% * 860= 0.35 * 860= 301
90% of 860= 90% * 860= 0.9 * 860= 774
60% of 860= 60% * 860= 0.6 * 860= 516
5% of 860 = 5% * 860 = 0.05 * 860 = 43
percent of 8.6 = 860%8.6= 8.6 * 100%= 860%