Dupont Formula isn't much in vogue but I think the Return on Equity version is easier to work with if expressed as:

(Net Income / Sales) * (Sales / Total Assets) * (Total Assets / Avg Equity)

So based on your numbers above (Sales I think are $5.562b) but adjusting out extraordinary movements in earnings (Earnings back down to $955m)...

=(955/5562) * (5562m/8176) * (8276/3604)
=0.1717 * 0.6803 * 2.296
=0.2681
=26.81%

Personally, I'd just go for ROE as Net Income / Avg Equity (or more simply End of Year Equity)...

= (955/3604)
=0.265
=26.5%

In this example they are virtually the same in any case. The DuPont measure is injecting a qualitative stance by supposing that high sales margins and high return on assets are attributes that should go hand in hand with high return on equity. Probably works for most arguments but more difficult to apply to a Bank on the asset measure or a large format discount retailers on the sales margin one - you'd want to be comparing against peers rather than other industries and that might make you lose sight of return on equity if other industries provide better prospects.