-27% is the change from 911 to 665
Calculation steps:
[( 665 - 911 ) ÷ 911] x 100 = -27%
Formula
Percentage change = [(665 - 911) / 911] x 100
Subtract the new number by the original number
665 - 911 = -246
-246 ÷ 911 = -0.270032930845225
-0.270032930845225 x 100 = -27%