Equity is a great growth bank to those who are patient. for now the no. of shares and the p.e. may be against the share.

Just because banks are hitting over 100% returns doesnt mean that they cannot out-perform again.
The opposite is actually true.Those stocks that hit 100% returns tend to be huge gainers in the years too come as by hitting that >100% investors are shouting w/ a very big voice that they see potential in the stock and thats y they are pushing the price up.
If fundies ( fundamentals) play accordingly they it would be the bests decision to add to a stock that has already hit > 80% return.

Please show me the calculations that indicate a PE of 6.91 for KCB

You have to use Group Earnings. After all, these are investments of KCB. Unless, KCB plans to sell these subsidiaries OR close them down...

The price-to-earnings ratio (P/E) is probably the most widely used -- and thus misused -- investing metric. It's easy to calculate, which explains its popularity. The two most common ways to calculate it are:
P/E = share price divided by earnings per share
P/E = market capitalization divided by net income

The share price is the market capitalization divided by the number of shares, so the results should be identical. Share price and the market cap are easy to find in the quote section of any financial website. The earnings are usually taken from the trailing 12 months (TTM) and can be found by checking the income statement for the past four quarters. A P/E using TTM figures is often called the current P/E.

Another variation is the forward P/E, which is calculated using analyst future earnings estimates, rather than actual historical earnings. Most financial websites give both the current and forward P/E. I find forward P/E a useful guide for cyclical companies, companies coming out of negative earnings, and those that have significant one-time charges embedded in current earnings. You may also encounter the dilutedP/E, which accounts for a company's diluted shares.

i am sure @ VVS you passed your nursery maths lessons. If you didnt get anything just note that

P/E = share price divided by earnings per share

OR

P/E = market capitalization divided by net income

NO rocket science.