-3.24% is the change from 989 to 957
Calculation steps:
[( 957 - 989 ) ÷ 989] x 100 = -3.24%
Formula
Percentage change = [(957 - 989) / 989] x 100
Subtract the new number by the original number
957 - 989 = -32
-32 ÷ 989 = -0.032355915065722954
-0.032355915065722954 x 100 = -3.24%