-49.6% is the change from 992 to 500
Calculation steps:
[( 500 - 992 ) ÷ 992] x 100 = -49.6%
Formula
Percentage change = [(500 - 992) / 992] x 100
Subtract the new number by the original number
500 - 992 = -492
-492 ÷ 992 = -0.4959677419354839
-0.4959677419354839 x 100 = -49.6%