-86.62% is the change from 904 to 121
Calculation steps:
[( 121 - 904 ) ÷ 904] x 100 = -86.62%
Formula
Percentage change = [(121 - 904) / 904] x 100
Subtract the new number by the original number
121 - 904 = -783
-783 ÷ 904 = -0.8661504424778761
-0.8661504424778761 x 100 = -86.62%