-45.3% is the change from 638 to 349
Calculation steps:
[( 349 - 638 ) ÷ 638] x 100 = -45.3%
Formula
Percentage change = [(349 - 638) / 638] x 100
Subtract the new number by the original number
349 - 638 = -289
-289 ÷ 638 = -0.45297805642633227
-0.45297805642633227 x 100 = -45.3%