-65.42% is the change from 911 to 315
Calculation steps:
[( 315 - 911 ) ÷ 911] x 100 = -65.42%
Formula
Percentage change = [(315 - 911) / 911] x 100
Subtract the new number by the original number
315 - 911 = -596
-596 ÷ 911 = -0.6542261251372119
-0.6542261251372119 x 100 = -65.42%