-41.48% is the change from 581 to 340
Calculation steps:
[( 340 - 581 ) ÷ 581] x 100 = -41.48%
Formula
Percentage change = [(340 - 581) / 581] x 100
Subtract the new number by the original number
340 - 581 = -241
-241 ÷ 581 = -0.41480206540447506
-0.41480206540447506 x 100 = -41.48%