-66.26% is the change from 978 to 330
Calculation steps:
[( 330 - 978 ) ÷ 978] x 100 = -66.26%
Formula
Percentage change = [(330 - 978) / 978] x 100
Subtract the new number by the original number
330 - 978 = -648
-648 ÷ 978 = -0.6625766871165644
-0.6625766871165644 x 100 = -66.26%