-65.64% is the change from 978 to 336
Calculation steps:
[( 336 - 978 ) ÷ 978] x 100 = -65.64%
Formula
Percentage change = [(336 - 978) / 978] x 100
Subtract the new number by the original number
336 - 978 = -642
-642 ÷ 978 = -0.656441717791411
-0.656441717791411 x 100 = -65.64%