-49.22% is the change from 449 to 228
Calculation steps:
[( 228 - 449 ) ÷ 449] x 100 = -49.22%
Formula
Percentage change = [(228 - 449) / 449] x 100
Subtract the new number by the original number
228 - 449 = -221
-221 ÷ 449 = -0.4922048997772829
-0.4922048997772829 x 100 = -49.22%