-41.75% is the change from 685 to 399
Calculation steps:
[( 399 - 685 ) ÷ 685] x 100 = -41.75%
Formula
Percentage change = [(399 - 685) / 685] x 100
Subtract the new number by the original number
399 - 685 = -286
-286 ÷ 685 = -0.41751824817518246
-0.41751824817518246 x 100 = -41.75%