personally, my best method of calculation, is comparing amount deposited to amount withdrawn

(either that, or need to find all the scraps of paper that have fallen where they may)..
but.............................. Do want to comment on a method of calculation that does NOT work. (Koty's dad could go into much more detail on this, but i will go with the basics instead) %%%%%%%%%%%%%%????????????????? how in the HELL can one calculate anything accurately on percentages????
BASIC example:
your bankroll $1000
day one, you lose 30%......
currently you have 1000-300= for a total bankroll of $700 remaining!
day 2, you lose 30% again......
currently you have 700-210= for a total bankroll of $590.00
day 3, you lose 30% AGAIN (is it time to QUIT yet)
currently you have 590-177 = for a new total bankroll of $413.00
MOST COOL NOW!!!!!!!!!!!!! you feel REALLY lucky tonight and put a total of 100% of your bankroll on the line!!!
woooooo hooooo 413+413= 826 ........ hmmmmmm still under the 1000 that you started with, but you have only lost 90% on plays and gained 100%......so you can say that you are up 10%
imagine how easy it is for *someone*

to fudge how they are doing by using percentages........
you need a spreadsheet to prove ANYTHING
make your own plays people