-42.18% is the change from 588 to 340
Calculation steps:
[( 340 - 588 ) ÷ 588] x 100 = -42.18%
Formula
Percentage change = [(340 - 588) / 588] x 100
Subtract the new number by the original number
340 - 588 = -248
-248 ÷ 588 = -0.4217687074829932
-0.4217687074829932 x 100 = -42.18%