-39.87% is the change from 637 to 383
Calculation steps:
[( 383 - 637 ) ÷ 637] x 100 = -39.87%
Formula
Percentage change = [(383 - 637) / 637] x 100
Subtract the new number by the original number
383 - 637 = -254
-254 ÷ 637 = -0.3987441130298273
-0.3987441130298273 x 100 = -39.87%