-86.61% is the change from 911 to 122
Calculation steps:
[( 122 - 911 ) ÷ 911] x 100 = -86.61%
Formula
Percentage change = [(122 - 911) / 911] x 100
Subtract the new number by the original number
122 - 911 = -789
-789 ÷ 911 = -0.8660812294182217
-0.8660812294182217 x 100 = -86.61%