-5.11% is the change from 978 to 928
Calculation steps:
[( 928 - 978 ) ÷ 978] x 100 = -5.11%
Formula
Percentage change = [(928 - 978) / 978] x 100
Subtract the new number by the original number
928 - 978 = -50
-50 ÷ 978 = -0.05112474437627812
-0.05112474437627812 x 100 = -5.11%