Table:
revised average growth in annual gdp
previously published average growth in annual gdp
mean absolute revision to the growth in annual gdp

percent
percentage points

2015 to 2017
2.44
2.55
0.11

2015
-0.22
0.24
0.46

2016
1.91
2.03
0.12

2017
5.62
5.39
0.23

Statement: the revision to the annual growth rate of nominal gdp decreased the rate by 0.5 percentage points in 2015.
Question: how many percentage points did the annual growth rate of nominal gdp decrease after the revision in 2015?
Answer: [0.46]