0.5%
1) Let's start by setting the table
Car BusWalk Other
758530 7 105
2) Let's add them all up to find out how many people are there
758 +530 +7 +105 =1400
Let's now set a proportion to figure out the equivalence of those 7
1400 -------------- 100%
7 ------------------- x
Cross multiply those ratios:
1400x = 700
1400/1400x=700/1400
x=0.5
3) So 0.5% of the employees go to work on foot.