-49.78% is the change from 683 to 343
Calculation steps:
[( 343 - 683 ) ÷ 683] x 100 = -49.78%
Formula
Percentage change = [(343 - 683) / 683] x 100
Subtract the new number by the original number
343 - 683 = -340
-340 ÷ 683 = -0.4978038067349927
-0.4978038067349927 x 100 = -49.78%