Awareness level is currently 77%, or .77.
Awareness decreases by 33% per year, so without any additional promotion spending, awareness next year would be .77 * .66 (2/3 of 77%)
The 1 million dollar spending will increase awares by 26%, so the effect on awareness will be 0.77 * 1.26
To calculate awareness next year:
77% times (1.26 - .33)
= .77 * 0.93
= .716, or 71.6%