-27.16% is the change from 578 to 421
Calculation steps:
[( 421 - 578 ) ÷ 578] x 100 = -27.16%
Formula
Percentage change = [(421 - 578) / 578] x 100
Subtract the new number by the original number
421 - 578 = -157
-157 ÷ 578 = -0.27162629757785467
-0.27162629757785467 x 100 = -27.16%