-6.75% is the change from 578 to 539
Calculation steps:
[( 539 - 578 ) ÷ 578] x 100 = -6.75%
Formula
Percentage change = [(539 - 578) / 578] x 100
Subtract the new number by the original number
539 - 578 = -39
-39 ÷ 578 = -0.06747404844290658
-0.06747404844290658 x 100 = -6.75%