-85.86% is the change from 912 to 129
Calculation steps:
[( 129 - 912 ) ÷ 912] x 100 = -85.86%
Formula
Percentage change = [(129 - 912) / 912] x 100
Subtract the new number by the original number
129 - 912 = -783
-783 ÷ 912 = -0.8585526315789473
-0.8585526315789473 x 100 = -85.86%