-26.13% is the change from 685 to 506
Calculation steps:
[( 506 - 685 ) ÷ 685] x 100 = -26.13%
Formula
Percentage change = [(506 - 685) / 685] x 100
Subtract the new number by the original number
506 - 685 = -179
-179 ÷ 685 = -0.2613138686131387
-0.2613138686131387 x 100 = -26.13%