Pace of adoption also seems to be accelerating , from 2009 to about 2016 it went from 0.5 to 1,5 (+ 1 percent), from 2016 to 2023 it went from 1.5 to 3 (+1.5 percent), the adoption also seems to be at least doubling about every decade (which might indicate a "word to mouth" growth pattern.
Because original is incorrect. For the first increase 0.5% to 1.5% is an increase of 200% while the increase in percentage points is 1. The reason it's important is that it can skew the readability of the statistics to a degree where the numbers at best are confusing and at worst are misleading. In your case you accidentally understated the significance of the increase.