-17.3% is the change from 578 to 478
Calculation steps:
[( 478 - 578 ) ÷ 578] x 100 = -17.3%
Formula
Percentage change = [(478 - 578) / 578] x 100
Subtract the new number by the original number
478 - 578 = -100
-100 ÷ 578 = -0.17301038062283736
-0.17301038062283736 x 100 = -17.3%