-31.12% is the change from 993 to 684
Calculation steps:
[( 684 - 993 ) ÷ 993] x 100 = -31.12%
Formula
Percentage change = [(684 - 993) / 993] x 100
Subtract the new number by the original number
684 - 993 = -309
-309 ÷ 993 = -0.311178247734139
-0.311178247734139 x 100 = -31.12%