-32.6% is the change from 635 to 428
Calculation steps:
[( 428 - 635 ) ÷ 635] x 100 = -32.6%
Formula
Percentage change = [(428 - 635) / 635] x 100
Subtract the new number by the original number
428 - 635 = -207
-207 ÷ 635 = -0.32598425196850395
-0.32598425196850395 x 100 = -32.6%