Quote ="Wire_Yed"When i do a percentage i do it the way my Teacher taught me at primary school and always remember it (not quite a mnemonic but works for me), slightly different to you TANCW
100 x the number before the 'of' the divide the after 'of' number by the 1st sum.
so
(100 x 22) / 27'"
Doesn't matter which way round you do it mate. You just use the 100 first, a lot of others do it at the end.
(100 x 22) / 27 is the same as (22 / 27) x 100.
You don't even really need the 100, just take the first two numbers after the decimal point as the percentage
i.e. 22 / 27 = 0.814 so therefore its 81.4%