-50% is the change from 986 to 493
Calculation steps:
[( 493 - 986 ) ÷ 986] x 100 = -50%
Formula
Percentage change = [(493 - 986) / 986] x 100
Subtract the new number by the original number
493 - 986 = -493
-493 ÷ 986 = -0.5
-0.5 x 100 = -50%
Example