-3.07% is the change from 978 to 948
Calculation steps:
[( 948 - 978 ) ÷ 978] x 100 = -3.07%
Formula
Percentage change = [(948 - 978) / 978] x 100
Subtract the new number by the original number
948 - 978 = -30
-30 ÷ 978 = -0.03067484662576687
-0.03067484662576687 x 100 = -3.07%