-75.68% is the change from 999 to 243
Calculation steps:
[( 243 - 999 ) ÷ 999] x 100 = -75.68%
Formula
Percentage change = [(243 - 999) / 999] x 100
Subtract the new number by the original number
243 - 999 = -756
-756 ÷ 999 = -0.7567567567567568
-0.7567567567567568 x 100 = -75.68%