-2.94% is the change from 578 to 561
Calculation steps:
[( 561 - 578 ) ÷ 578] x 100 = -2.94%
Formula
Percentage change = [(561 - 578) / 578] x 100
Subtract the new number by the original number
561 - 578 = -17
-17 ÷ 578 = -0.029411764705882353
-0.029411764705882353 x 100 = -2.94%