-95.2% is the change from 500 to 24
Calculation steps:
[( 24 - 500 ) ÷ 500] x 100 = -95.2%
Formula
Percentage change = [(24 - 500) / 500] x 100
Subtract the new number by the original number
24 - 500 = -476
-476 ÷ 500 = -0.952
-0.952 x 100 = -95.2%
Example