-45.74% is the change from 634 to 344
Calculation steps:
[( 344 - 634 ) ÷ 634] x 100 = -45.74%
Formula
Percentage change = [(344 - 634) / 634] x 100
Subtract the new number by the original number
344 - 634 = -290
-290 ÷ 634 = -0.45741324921135645
-0.45741324921135645 x 100 = -45.74%