-97.83% is the change from 646 to 14
Calculation steps:
[( 14 - 646 ) ÷ 646] x 100 = -97.83%
Formula
Percentage change = [(14 - 646) / 646] x 100
Subtract the new number by the original number
14 - 646 = -632
-632 ÷ 646 = -0.978328173374613
-0.978328173374613 x 100 = -97.83%