-97.46% is the change from 631 to 16
Calculation steps:
[( 16 - 631 ) ÷ 631] x 100 = -97.46%
Formula
Percentage change = [(16 - 631) / 631] x 100
Subtract the new number by the original number
16 - 631 = -615
-615 ÷ 631 = -0.9746434231378764
-0.9746434231378764 x 100 = -97.46%