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.

[-43, 8, -34, 57, -15, -78, 34, -49, 74]
[51, 42, 91, 72, 63, 112, 83, 123]