-48.77% is the change from 978 to 501
Calculation steps:
[( 501 - 978 ) ÷ 978] x 100 = -48.77%
Formula
Percentage change = [(501 - 978) / 978] x 100
Subtract the new number by the original number
501 - 978 = -477
-477 ÷ 978 = -0.48773006134969327
-0.48773006134969327 x 100 = -48.77%