-19.44% is the change from 957 to 771
Calculation steps:
[( 771 - 957 ) ÷ 957] x 100 = -19.44%
Formula
Percentage change = [(771 - 957) / 957] x 100
Subtract the new number by the original number
771 - 957 = -186
-186 ÷ 957 = -0.19435736677115986
-0.19435736677115986 x 100 = -19.44%