-27.88% is the change from 911 to 657
Calculation steps:
[( 657 - 911 ) ÷ 911] x 100 = -27.88%
Formula
Percentage change = [(657 - 911) / 911] x 100
Subtract the new number by the original number
657 - 911 = -254
-254 ÷ 911 = -0.278814489571899
-0.278814489571899 x 100 = -27.88%