-46.15% is the change from 999 to 538
Calculation steps:
[( 538 - 999 ) ÷ 999] x 100 = -46.15%
Formula
Percentage change = [(538 - 999) / 999] x 100
Subtract the new number by the original number
538 - 999 = -461
-461 ÷ 999 = -0.46146146146146144
-0.46146146146146144 x 100 = -46.15%