-7.77% is the change from 978 to 902
Calculation steps:
[( 902 - 978 ) ÷ 978] x 100 = -7.77%
Formula
Percentage change = [(902 - 978) / 978] x 100
Subtract the new number by the original number
902 - 978 = -76
-76 ÷ 978 = -0.07770961145194274
-0.07770961145194274 x 100 = -7.77%