human
the following table provides the weighted average assumptions used in the black-scholes option-pricing model for grants and the resulting weighted average grant date fair value per share of stock options granted for the years ended december 31:.
|  | 2018 | 2017 | 2016 |
| --------- | --------- | --------- | --------- |
| Intrinsic value | $9 | $10 | $18 |
| Exercise proceeds | 7 | 11 | 15 |
| Income tax benefit realized | 2 | 3 | 6 |
stock units during 2018, 2017 and 2016, the company granted rsus to certain employees under the 2007 plan and 2017 omnibus plan, as applicable. rsus generally vest based on continued employment with the company over periods ranging from one to three years. .
Please compute the result.
what is the change in value of intrinsic value from 2016 to 2018?
assistant
-9.0
human
what percentage change does this represent?
assistant
-0.5