-54.18% is the change from 502 to 230
Calculation steps:
[( 230 - 502 ) ÷ 502] x 100 = -54.18%
Formula
Percentage change = [(230 - 502) / 502] x 100
Subtract the new number by the original number
230 - 502 = -272
-272 ÷ 502 = -0.5418326693227091
-0.5418326693227091 x 100 = -54.18%