-54.4% is the change from 500 to 228
Calculation steps:
[( 228 - 500 ) ÷ 500] x 100 = -54.4%
Formula
Percentage change = [(228 - 500) / 500] x 100
Subtract the new number by the original number
228 - 500 = -272
-272 ÷ 500 = -0.544
-0.544 x 100 = -54.4%