-92.75% is the change from 579 to 42
Calculation steps:
[( 42 - 579 ) ÷ 579] x 100 = -92.75%
Formula
Percentage change = [(42 - 579) / 579] x 100
Subtract the new number by the original number
42 - 579 = -537
-537 ÷ 579 = -0.927461139896373
-0.927461139896373 x 100 = -92.75%