-41.28% is the change from 579 to 340
Calculation steps:
[( 340 - 579 ) ÷ 579] x 100 = -41.28%
Formula
Percentage change = [(340 - 579) / 579] x 100
Subtract the new number by the original number
340 - 579 = -239
-239 ÷ 579 = -0.41278065630397237
-0.41278065630397237 x 100 = -41.28%