-96.64% is the change from 685 to 23
Calculation steps:
[( 23 - 685 ) ÷ 685] x 100 = -96.64%
Formula
Percentage change = [(23 - 685) / 685] x 100
Subtract the new number by the original number
23 - 685 = -662
-662 ÷ 685 = -0.9664233576642336
-0.9664233576642336 x 100 = -96.64%