-26.45% is the change from 911 to 670
Calculation steps:
[( 670 - 911 ) ÷ 911] x 100 = -26.45%
Formula
Percentage change = [(670 - 911) / 911] x 100
Subtract the new number by the original number
670 - 911 = -241
-241 ÷ 911 = -0.2645444566410538
-0.2645444566410538 x 100 = -26.45%