I need some help.

Sample Data
A B C D

1 | 700 | 800 | =A1/B1 (=87.5%)
2 | 720 | 800 | =A2/B2 (=90%)
3 | 721 | 800 | =A3/B3 (=91%)
4 | 792 | 800 | =A4/B4 (=99%)
5 | 800 | 800 | =A5/B5 (=100%)
6 | 952 | 800 | =A5/B5 (=119%)
7 | 960 | 800 | =A5/B5 (=120%)

Here is what I would like cell D1 to do based on the answer in C1. If the
answer in cell c1 is less than 90% then return the value in cell C1, but if
the cell value in C1 is greater or equal to 90% but less than 100% then add
text that states "MTD FCST within 10%", but if the cell value in C1 is
greater or equal to 100% but less than 120% then add text that states "MTD
FCST exceeds FCST but acceptable", but if the cell value in C1 exceeds 120%
then add text that states "Over FCST"

Thanks in advance for any help.
--
GS