-35.95% is the change from 637 to 408
Calculation steps:
[( 408 - 637 ) ÷ 637] x 100 = -35.95%
Formula
Percentage change = [(408 - 637) / 637] x 100
Subtract the new number by the original number
408 - 637 = -229
-229 ÷ 637 = -0.35949764521193095
-0.35949764521193095 x 100 = -35.95%