-10.9% is the change from 578 to 515
Calculation steps:
[( 515 - 578 ) ÷ 578] x 100 = -10.9%
Formula
Percentage change = [(515 - 578) / 578] x 100
Subtract the new number by the original number
515 - 578 = -63
-63 ÷ 578 = -0.10899653979238755
-0.10899653979238755 x 100 = -10.9%