-44.78% is the change from 623 to 344
Calculation steps:
[( 344 - 623 ) ÷ 623] x 100 = -44.78%
Formula
Percentage change = [(344 - 623) / 623] x 100
Subtract the new number by the original number
344 - 623 = -279
-279 ÷ 623 = -0.4478330658105939
-0.4478330658105939 x 100 = -44.78%