Calculator key sequence?

[PoorOldSpike]

Does anybody know what the key sequence is to find out percentages on pocket calculators?
For example I've bought 158 tanks in Malitz so far and lost 119 of them, so what's 119 as a percentage of 158?
I want to do other percent calculations too which is why I need the key sequence, the help index for my PC's calculator doesn't even have the word 'percentages' in it, duh..

(PS-for the record my Malitz opponents have bought 142 tanks so far and lost 99 of them, so it looks like their percentage kill ratio is better than mine, but i need to know the key sequence to find out for sure)