-94.56% is the change from 993 to 54
Calculation steps:
[( 54 - 993 ) ÷ 993] x 100 = -94.56%
Formula
Percentage change = [(54 - 993) / 993] x 100
Subtract the new number by the original number
54 - 993 = -939
-939 ÷ 993 = -0.945619335347432
-0.945619335347432 x 100 = -94.56%