-40.96% is the change from 581 to 343
Calculation steps:
[( 343 - 581 ) ÷ 581] x 100 = -40.96%
Formula
Percentage change = [(343 - 581) / 581] x 100
Subtract the new number by the original number
343 - 581 = -238
-238 ÷ 581 = -0.40963855421686746
-0.40963855421686746 x 100 = -40.96%