-16.5% is the change from 994 to 830
Calculation steps:
[( 830 - 994 ) ÷ 994] x 100 = -16.5%
Formula
Percentage change = [(830 - 994) / 994] x 100
Subtract the new number by the original number
830 - 994 = -164
-164 ÷ 994 = -0.16498993963782696
-0.16498993963782696 x 100 = -16.5%