9 stones

I was 15 stone and 7 pounds now I am 14 stone and 11 and a half pounds what the differences

It is very simple to convert stones in to pounds. One stone is equal to 14 ponds. So, multiply number of stones with 14. E.g.,

for 10 stones, 10 X 14 = 140 pounds.

for 10 stones, 10 X 14 = 140 pounds.