Lab 5 - Increase values in array (by percentage)

def increase_percent(a):
    n = a
    i = 0
    inc_per = 0.5
    print("Number increase",inc_per*100,"%")
    while(i < len(n)):
        print("Original Array n[",i,"] =",n[i])
        n[i] = n[i] + n[i]*inc_per
        print("Increase Array n[",i,"] =",n[i])
        print()
        i = i + 1

increase_percent([5, 6, 7, 8])