-66.97% is the change from 978 to 323
Calculation steps:
[( 323 - 978 ) ÷ 978] x 100 = -66.97%
Formula
Percentage change = [(323 - 978) / 978] x 100
Subtract the new number by the original number
323 - 978 = -655
-655 ÷ 978 = -0.6697341513292433
-0.6697341513292433 x 100 = -66.97%