1460 to 657 is a 55% decrease.
As 0.657 is said as six hundred and fifty seven thousandths then you write it as 657 over 1000 or 657/1000
It is as a number: 657,000,000
657/100
0.816 as a percent
You would write one percent of a dollar as $0.01
I would write 0.006
0.093 would be 9.3 as a percent.
You would write it as 0.17.
I would write it as 0.008
4285%
146%