cashngrab, you have 300% of your original punt/investment. Not 300% profit.
You have made 200% profit on your original purchase (don't include your original outlay in profit)
1+0=00% profit (1+0=1)
therefore
1+1=100% profit (1+1=2)
therefore
1+1+1=200% profit (1+1+1=3)
Buy @ 1 sell @ 3 = 200% profit.