-66.36% is the change from 993 to 334
Calculation steps:
[( 334 - 993 ) ÷ 993] x 100 = -66.36%
Formula
Percentage change = [(334 - 993) / 993] x 100
Subtract the new number by the original number
334 - 993 = -659
-659 ÷ 993 = -0.6636455186304129
-0.6636455186304129 x 100 = -66.36%