-76.58% is the change from 999 to 234
Calculation steps:
[( 234 - 999 ) ÷ 999] x 100 = -76.58%
Formula
Percentage change = [(234 - 999) / 999] x 100
Subtract the new number by the original number
234 - 999 = -765
-765 ÷ 999 = -0.7657657657657657
-0.7657657657657657 x 100 = -76.58%