-55.11% is the change from 978 to 439
Calculation steps:
[( 439 - 978 ) ÷ 978] x 100 = -55.11%
Formula
Percentage change = [(439 - 978) / 978] x 100
Subtract the new number by the original number
439 - 978 = -539
-539 ÷ 978 = -0.5511247443762781
-0.5511247443762781 x 100 = -55.11%