-54.58% is the change from 502 to 228
Calculation steps:
[( 228 - 502 ) ÷ 502] x 100 = -54.58%
Formula
Percentage change = [(228 - 502) / 502] x 100
Subtract the new number by the original number
228 - 502 = -274
-274 ÷ 502 = -0.545816733067729
-0.545816733067729 x 100 = -54.58%