-46.73% is the change from 978 to 521
Calculation steps:
[( 521 - 978 ) ÷ 978] x 100 = -46.73%
Formula
Percentage change = [(521 - 978) / 978] x 100
Subtract the new number by the original number
521 - 978 = -457
-457 ÷ 978 = -0.467280163599182
-0.467280163599182 x 100 = -46.73%