-4.23% is the change from 992 to 950
Calculation steps:
[( 950 - 992 ) ÷ 992] x 100 = -4.23%
Formula
Percentage change = [(950 - 992) / 992] x 100
Subtract the new number by the original number
950 - 992 = -42
-42 ÷ 992 = -0.04233870967741935
-0.04233870967741935 x 100 = -4.23%