2.51% is the change from 957 to 981
Calculation steps:
[( 981 - 957 ) ÷ 957] x 100 = 2.51%
Formula
Percentage change = [(981 - 957) / 957] x 100
Subtract the new number by the original number
981 - 957 = 24
24 ÷ 957 = 0.025078369905956112
0.025078369905956112 x 100 = 2.51%