-27.29% is the change from 579 to 421
Calculation steps:
[( 421 - 579 ) ÷ 579] x 100 = -27.29%
Formula
Percentage change = [(421 - 579) / 579] x 100
Subtract the new number by the original number
421 - 579 = -158
-158 ÷ 579 = -0.27288428324697755
-0.27288428324697755 x 100 = -27.29%