-21.78% is the change from 978 to 765
Calculation steps:
[( 765 - 978 ) ÷ 978] x 100 = -21.78%
Formula
Percentage change = [(765 - 978) / 978] x 100
Subtract the new number by the original number
765 - 978 = -213
-213 ÷ 978 = -0.21779141104294478
-0.21779141104294478 x 100 = -21.78%