-68% is the change from 978 to 313
Calculation steps:
[( 313 - 978 ) ÷ 978] x 100 = -68%
Formula
Percentage change = [(313 - 978) / 978] x 100
Subtract the new number by the original number
313 - 978 = -665
-665 ÷ 978 = -0.679959100204499
-0.679959100204499 x 100 = -68%