-90.89% is the change from 911 to 83
Calculation steps:
[( 83 - 911 ) ÷ 911] x 100 = -90.89%
Formula
Percentage change = [(83 - 911) / 911] x 100
Subtract the new number by the original number
83 - 911 = -828
-828 ÷ 911 = -0.9088913282107574
-0.9088913282107574 x 100 = -90.89%