-97.53% is the change from 649 to 16
Calculation steps:
[( 16 - 649 ) ÷ 649] x 100 = -97.53%
Formula
Percentage change = [(16 - 649) / 649] x 100
Subtract the new number by the original number
16 - 649 = -633
-633 ÷ 649 = -0.975346687211094
-0.975346687211094 x 100 = -97.53%