-35.07% is the change from 978 to 635
Calculation steps:
[( 635 - 978 ) ÷ 978] x 100 = -35.07%
Formula
Percentage change = [(635 - 978) / 978] x 100
Subtract the new number by the original number
635 - 978 = -343
-343 ÷ 978 = -0.3507157464212679
-0.3507157464212679 x 100 = -35.07%