-97.66% is the change from 685 to 16
Calculation steps:
[( 16 - 685 ) ÷ 685] x 100 = -97.66%
Formula
Percentage change = [(16 - 685) / 685] x 100
Subtract the new number by the original number
16 - 685 = -669
-669 ÷ 685 = -0.9766423357664233
-0.9766423357664233 x 100 = -97.66%