2.09% is the change from 957 to 977
Calculation steps:
[( 977 - 957 ) ÷ 957] x 100 = 2.09%
Formula
Percentage change = [(977 - 957) / 957] x 100
Subtract the new number by the original number
977 - 957 = 20
20 ÷ 957 = 0.02089864158829676
0.02089864158829676 x 100 = 2.09%