-31.43% is the change from 999 to 685
Calculation steps:
[( 685 - 999 ) ÷ 999] x 100 = -31.43%
Formula
Percentage change = [(685 - 999) / 999] x 100
Subtract the new number by the original number
685 - 999 = -314
-314 ÷ 999 = -0.31431431431431434
-0.31431431431431434 x 100 = -31.43%