-96.37% is the change from 578 to 21
Calculation steps:
[( 21 - 578 ) ÷ 578] x 100 = -96.37%
Formula
Percentage change = [(21 - 578) / 578] x 100
Subtract the new number by the original number
21 - 578 = -557
-557 ÷ 578 = -0.9636678200692042
-0.9636678200692042 x 100 = -96.37%