Python, how to compare variable [on hold]

i'm new in programming. how to make this script working?

var1 = ["19", "5", "14",]
var2 = (15)
var3 = (9)

def compare(n):
    if var1[n] >= var2:
        print(str(var1[n]) + " greater than " + str(var2) + " =100%")
        print("\n")
    elif var1[n] >= var3:
        print(str(var1[n]) + " greater than " + str(var3) + " =50%")
        print("\n")
    else:
        print(str(var1[n]) + " less than " + str(var3) + " =0%")
        print("\n")

for a in range (len(var1)):
    compare(a)

Thank in advance