-40.8% is the change from 500 to 296
Calculation steps:
[( 296 - 500 ) ÷ 500] x 100 = -40.8%
Formula
Percentage change = [(296 - 500) / 500] x 100
Subtract the new number by the original number
296 - 500 = -204
-204 ÷ 500 = -0.408
-0.408 x 100 = -40.8%