-54.12% is the change from 497 to 228
Calculation steps:
[( 228 - 497 ) ÷ 497] x 100 = -54.12%
Formula
Percentage change = [(228 - 497) / 497] x 100
Subtract the new number by the original number
228 - 497 = -269
-269 ÷ 497 = -0.5412474849094567
-0.5412474849094567 x 100 = -54.12%