-87.61% is the change from 993 to 123
Calculation steps:
[( 123 - 993 ) ÷ 993] x 100 = -87.61%
Formula
Percentage change = [(123 - 993) / 993] x 100
Subtract the new number by the original number
123 - 993 = -870
-870 ÷ 993 = -0.8761329305135952
-0.8761329305135952 x 100 = -87.61%