-0.1% is the change from 994 to 993
Calculation steps:
[( 993 - 994 ) ÷ 994] x 100 = -0.1%
Formula
Percentage change = [(993 - 994) / 994] x 100
Subtract the new number by the original number
993 - 994 = -1
-1 ÷ 994 = -0.001006036217303823
-0.001006036217303823 x 100 = -0.1%