-93.86% is the change from 635 to 39
Calculation steps:
[( 39 - 635 ) ÷ 635] x 100 = -93.86%
Formula
Percentage change = [(39 - 635) / 635] x 100
Subtract the new number by the original number
39 - 635 = -596
-596 ÷ 635 = -0.9385826771653544
-0.9385826771653544 x 100 = -93.86%