-49.19% is the change from 677 to 344
Calculation steps:
[( 344 - 677 ) ÷ 677] x 100 = -49.19%
Formula
Percentage change = [(344 - 677) / 677] x 100
Subtract the new number by the original number
344 - 677 = -333
-333 ÷ 677 = -0.4918759231905465
-0.4918759231905465 x 100 = -49.19%