I think seniors are probably the most anxious Canadians right now, because of the health issues around COVID-19 and the reality that it is hitting seniors disproportionately hard. I do know that we need to be very focused on our health systems to make sure they are supported, which we've been doing. To make sure that we work together with the provinces in the securing of the kind of equipment we need is also critically important.
From a financial standpoint, most of our efforts financially have been in trying to bridge people through this difficult time. That means in particular thinking about people in businesses that are having a fundamental change in their revenue as a result of COVID-19. From the seniors standpoint, the guaranteed income supplement and old age security of course are secure, so there's been no change in that. Also, when we introduced the GST low-income tax credit top-up, that had a very significant impact on seniors. More than 80% of single seniors and more than 40% of seniors in couples were advantaged through that measure, so that's quite helpful.
To the extent of their investment accounts, we have seen a huge amount of volatility in the investment accounts, as you know. From lows, that has come back up. Nonetheless, we know there's anxiety. The decision to reduce by 25% the amount of the RRIF that people need to take out is important, consistent with what was done in 2008-09.
We'll have to consider challenges as they come, Peter. We're going to keep doing that. We recognize that we need to support seniors, as they're very anxious around health, and we'll continue to do that.