[fragmede]

How do you get a margin over 100%?

[Qwertious]

If you spend $100 making a phone and sell it for $200, you have a margin of 100%. If you sell it for $800, you have a margin of 700%.

[fragmede]

that's markup, not margin. At $200, the margin is 50% → (200 - 100) / 200 = 0.5.