-20.76% is the change from 978 to 775
Calculation steps:
[( 775 - 978 ) ÷ 978] x 100 = -20.76%
Formula
Percentage change = [(775 - 978) / 978] x 100
Subtract the new number by the original number
775 - 978 = -203
-203 ÷ 978 = -0.20756646216768918
-0.20756646216768918 x 100 = -20.76%