-45.85% is the change from 999 to 541
Calculation steps:
[( 541 - 999 ) ÷ 999] x 100 = -45.85%
Formula
Percentage change = [(541 - 999) / 999] x 100
Subtract the new number by the original number
541 - 999 = -458
-458 ÷ 999 = -0.45845845845845845
-0.45845845845845845 x 100 = -45.85%