-31.65% is the change from 635 to 434
Calculation steps:
[( 434 - 635 ) ÷ 635] x 100 = -31.65%
Formula
Percentage change = [(434 - 635) / 635] x 100
Subtract the new number by the original number
434 - 635 = -201
-201 ÷ 635 = -0.3165354330708661
-0.3165354330708661 x 100 = -31.65%