-41.58% is the change from 582 to 340
Calculation steps:
[( 340 - 582 ) ÷ 582] x 100 = -41.58%
Formula
Percentage change = [(340 - 582) / 582] x 100
Subtract the new number by the original number
340 - 582 = -242
-242 ÷ 582 = -0.41580756013745707
-0.41580756013745707 x 100 = -41.58%