-46.63% is the change from 579 to 309
Calculation steps:
[( 309 - 579 ) ÷ 579] x 100 = -46.63%
Formula
Percentage change = [(309 - 579) / 579] x 100
Subtract the new number by the original number
309 - 579 = -270
-270 ÷ 579 = -0.46632124352331605
-0.46632124352331605 x 100 = -46.63%