Assign given values to the values in the days column in the data frame using Python

100 - 90 = 9 89 - 79 = 8 78 - 68 = 7 67 - 57 = 6 56 - 46 = 5 45 - 35 = 4 34 - 24 = 3

Dataframe

Name	Days
A	98
B	25
C	78
D	62
E	35
F	100
G	85
H	36
I	97
J	81
K	83
L	91
M	49
N	53
O	75
P	64
Q	21
R	89
S	32
T	61
U	83
V	49