Prudential's operating profits fell by £110m to £543m in the first six months of the year, down from £653m in the same period last year.
Much of the downturn was due to falling stock markets and the company moved to reassure investors that it was still solvent.
It reported its free asset ratio - the ability to cover liabilities with assets - was 11% at the end of June. This was above the danger level of 8% but had slipped from 12.2% six months earlier.
The life company sold its general insurance business to Churchill in November.
Pre-tax profit was £166m, down from £364m and earnings per share was 18.4p, down from 23.4p.
The company announced an interim dividend of 8.9p.
