Untitled

Numbers = "7,4,2,1"
NumSplit = Numbers.split(",")
print(NumSplit)
Numbers = [int(i) for i in NumSplit]
print(Numbers)

subtraction = []
for i, value in enumerate(Numbers):
    if i >= 1:
        result = Numbers[i]-Numbers[i-1]
        subtraction.insert(i, result)
        print(subtraction)
print(max(subtraction))