-29.96% is the change from 978 to 685
Calculation steps:
[( 685 - 978 ) ÷ 978] x 100 = -29.96%
Formula
Percentage change = [(685 - 978) / 978] x 100
Subtract the new number by the original number
685 - 978 = -293
-293 ÷ 978 = -0.2995910020449898
-0.2995910020449898 x 100 = -29.96%