-86.51% is the change from 912 to 123
Calculation steps:
[( 123 - 912 ) ÷ 912] x 100 = -86.51%
Formula
Percentage change = [(123 - 912) / 912] x 100
Subtract the new number by the original number
123 - 912 = -789
-789 ÷ 912 = -0.8651315789473685
-0.8651315789473685 x 100 = -86.51%