-33.39% is the change from 635 to 423
Calculation steps:
[( 423 - 635 ) ÷ 635] x 100 = -33.39%
Formula
Percentage change = [(423 - 635) / 635] x 100
Subtract the new number by the original number
423 - 635 = -212
-212 ÷ 635 = -0.33385826771653543
-0.33385826771653543 x 100 = -33.39%