-71.9% is the change from 605 to 170
Calculation steps:
[( 170 - 605 ) ÷ 605] x 100 = -71.9%
Formula
Percentage change = [(170 - 605) / 605] x 100
Subtract the new number by the original number
170 - 605 = -435
-435 ÷ 605 = -0.71900826446281
-0.71900826446281 x 100 = -71.9%