-1.11% is the change from 989 to 978
Calculation steps:
[( 978 - 989 ) ÷ 989] x 100 = -1.11%
Formula
Percentage change = [(978 - 989) / 989] x 100
Subtract the new number by the original number
978 - 989 = -11
-11 ÷ 989 = -0.011122345803842264
-0.011122345803842264 x 100 = -1.11%