-11.94% is the change from 578 to 509
Calculation steps:
[( 509 - 578 ) ÷ 578] x 100 = -11.94%
Formula
Percentage change = [(509 - 578) / 578] x 100
Subtract the new number by the original number
509 - 578 = -69
-69 ÷ 578 = -0.11937716262975778
-0.11937716262975778 x 100 = -11.94%