-55.12% is the change from 508 to 228
Calculation steps:
[( 228 - 508 ) ÷ 508] x 100 = -55.12%
Formula
Percentage change = [(228 - 508) / 508] x 100
Subtract the new number by the original number
228 - 508 = -280
-280 ÷ 508 = -0.5511811023622047
-0.5511811023622047 x 100 = -55.12%