Table:
|  | At 30 Mar 2019 |  | At 31 Mar 2018 |  |
| --- | --- | --- | --- | --- |
|  | Premier schemes | RHM schemes | Premier schemes | RHM schemes |
| Discount rate | 2.45% | 2.45% | 2.70% | 2.70% |
| Inflation – RPI | 3.25% | 3.25% | 3.15% | 3.15% |
| Inflation – CPI | 2.15% | 2.15% | 2.05% | 2.05% |
| Expected salary increases | n/a | n/a | n/a | n/a |
| Future pension increases | 2.10% | 2.10% | 2.10% | 2.10% |
Paragraphs:
At the balance sheet date, the combined principal accounting assumptions were as follows:
For the smaller overseas schemes the discount rate used was 1.50% (2017/18: 1.80%) and future pension increases were 1.30% (2017/18: 1.45%).
At 30 March 2019 and 31 March 2018, the discount rate was derived based on a bond yield curve expanded to also include bonds rated AA by one credit agency (and which might for example be rated A or AAA by other agencies).
Question:
What is the change in the premier schemes discount rate from 2018 to 2019?
Answer: 2.45% - 2.70% = -0.25