-17.36% is the change from 605 to 500
Calculation steps:
[( 500 - 605 ) ÷ 605] x 100 = -17.36%
Formula
Percentage change = [(500 - 605) / 605] x 100
Subtract the new number by the original number
500 - 605 = -105
-105 ÷ 605 = -0.17355371900826447
-0.17355371900826447 x 100 = -17.36%