-44.61% is the change from 621 to 344
Calculation steps:
[( 344 - 621 ) ÷ 621] x 100 = -44.61%
Formula
Percentage change = [(344 - 621) / 621] x 100
Subtract the new number by the original number
344 - 621 = -277
-277 ÷ 621 = -0.44605475040257647
-0.44605475040257647 x 100 = -44.61%