-71.37% is the change from 978 to 280
Calculation steps:
[( 280 - 978 ) ÷ 978] x 100 = -71.37%
Formula
Percentage change = [(280 - 978) / 978] x 100
Subtract the new number by the original number
280 - 978 = -698
-698 ÷ 978 = -0.7137014314928425
-0.7137014314928425 x 100 = -71.37%