-85.84% is the change from 911 to 129
Calculation steps:
[( 129 - 911 ) ÷ 911] x 100 = -85.84%
Formula
Percentage change = [(129 - 911) / 911] x 100
Subtract the new number by the original number
129 - 911 = -782
-782 ÷ 911 = -0.858397365532382
-0.858397365532382 x 100 = -85.84%