Table:
province/territory
2013/2014
2014/2015
percent change in number of cases 2013/2014 to 2014/2015
difference in median length of cases 2013/2014 to 2014/2015

number
median length of case
number
median length of case
percent
days

canada
379,057
127
328,028
121
-13
-6

newfoundland and labrador
5,183
148
4,839
143
-7
-5

prince edward island
1,379
40
1,259
47
-9
7

nova scotia
11,550
155
10,899
163
-6
8

new brunswick
7,404
105
6,657
106
-10
1

quebec
77,294
237
57,941
239
-25
2

ontario
135,324
99
123,072
104
-9
5

manitoba
19,494
162
18,095
151
-7
-11

saskatchewan
23,337
73
22,767
77
-2
4

alberta
56,831
127
44,829
107
-21
-20

british columbia
36,763
113
33,930
105
-8
-8

yukon
991
92
910
103
-8
11

northwest territories
1,627
68
1,317
61
-19
-7

nunavut
1,880
66
1,513
71
-20
5

Statement: this was followed by completed cases' declines of over 10,000 cases in alberta from 2013/2014 to 2014/2015.
Question: how many percentage points did the number of completed cases change in alberta from 2013/2014 to 2014/2015?
Answer: [-21.0]