-97.48% is the change from 635 to 16
Calculation steps:
[( 16 - 635 ) ÷ 635] x 100 = -97.48%
Formula
Percentage change = [(16 - 635) / 635] x 100
Subtract the new number by the original number
16 - 635 = -619
-619 ÷ 635 = -0.9748031496062992
-0.9748031496062992 x 100 = -97.48%