-89.49% is the change from 942 to 99
Calculation steps:
[( 99 - 942 ) ÷ 942] x 100 = -89.49%
Formula
Percentage change = [(99 - 942) / 942] x 100
Subtract the new number by the original number
99 - 942 = -843
-843 ÷ 942 = -0.8949044585987261
-0.8949044585987261 x 100 = -89.49%