-2.09% is the change from 957 to 937
Calculation steps:
[( 937 - 957 ) ÷ 957] x 100 = -2.09%
Formula
Percentage change = [(937 - 957) / 957] x 100
Subtract the new number by the original number
937 - 957 = -20
-20 ÷ 957 = -0.02089864158829676
-0.02089864158829676 x 100 = -2.09%