-35.58% is the change from 978 to 630
Calculation steps:
[( 630 - 978 ) ÷ 978] x 100 = -35.58%
Formula
Percentage change = [(630 - 978) / 978] x 100
Subtract the new number by the original number
630 - 978 = -348
-348 ÷ 978 = -0.3558282208588957
-0.3558282208588957 x 100 = -35.58%