-69.78% is the change from 685 to 207
Calculation steps:
[( 207 - 685 ) ÷ 685] x 100 = -69.78%
Formula
Percentage change = [(207 - 685) / 685] x 100
Subtract the new number by the original number
207 - 685 = -478
-478 ÷ 685 = -0.6978102189781021
-0.6978102189781021 x 100 = -69.78%