Yes and no. That's not the way the chart is supposed to be used. You can use the chart for your initial set, but that's it.
The way RTS recommends it if it's an x2 @9 with a 10% reduction and repeats until @9 you'd warm up normally. Then use the chart or recent performance to judge what weight to use on your x2 @9. After warming up you'll do x2 at 90% of your projected top set, then 95% of your projected top set and make adjustments based on that if necessary. Like if you're not feeling it you'd stay there and move on to your 10% drop and repeats, if you feel normal just proceed as planned or if you feel like a beast you might go a little heavier. Then you drop 10% and repeat that weight until it feels as heavy as the initial work set (@9).
For the repeats (like x5 @8 to @9) you'd work up to your initial working set of 5 @8 and instead of dropping the weight you'd repeat that weight until it becomes an @9.
Does that make sense?