-1.78% is the change from 957 to 940
Calculation steps:
[( 940 - 957 ) ÷ 957] x 100 = -1.78%
Formula
Percentage change = [(940 - 957) / 957] x 100
Subtract the new number by the original number
940 - 957 = -17
-17 ÷ 957 = -0.017763845350052248
-0.017763845350052248 x 100 = -1.78%