-59.1% is the change from 978 to 400
Calculation steps:
[( 400 - 978 ) ÷ 978] x 100 = -59.1%
Formula
Percentage change = [(400 - 978) / 978] x 100
Subtract the new number by the original number
400 - 978 = -578
-578 ÷ 978 = -0.591002044989775
-0.591002044989775 x 100 = -59.1%