170 Out of 200 as a Percentage

What is 170 out of 200 as a percentage?
Percentage = Relative ValueReference Value x 100
170/200 as a percent = 170/200 x 100
= (17 x 10)/(20 x 10) x 100
= 17/20 x 100
= 17 x 5
= 85
170/200 as a percentage is 85%.