-15.15% is the change from 957 to 812
Calculation steps:
[( 812 - 957 ) ÷ 957] x 100 = -15.15%
Formula
Percentage change = [(812 - 957) / 957] x 100
Subtract the new number by the original number
812 - 957 = -145
-145 ÷ 957 = -0.15151515151515152
-0.15151515151515152 x 100 = -15.15%