How to calculate average percent?
I am aiming to record the profit/loss of share option trades, to calculate totals and the average percentage of profit/loss per trade. The total results at the bottom don't look correct. I can't see how there could be a dollar profit amount ($2335.09) yet the percentage profit is negative value (-59.6%). What am I doing wrong please?
Note that rows without a sell amount are trades that have been opened, but not closed yet.
Some trades are -100% as the options expired worthless.
The formula in F28 is =AVERAGE(E)
MacBook Pro (15-inch Mid 2012), macOS Sierra (10.12.4), SSD, Optical Drive swapped for HD