In this task you are given a list of integers and you need to find the absolute value of the difference between each two consecutive values. The output should be a list of the absolute value of the differences of each two consecutive values.
One example: [7, 1, 5, 8, -4]
Solution is here: [6, 4, 3, 12]
Explanation: The output is a list of the absolute value of the differences of every two consecutive values. So this is a good example.

Now, solve this: [83, -34, -99, 39, -44, 18, 13, -55, 43, 75, 69, 90]
Solution:
[117, 65, 138, 83, 62, 5, 68, 98, 32, 6, 21]