-21.38% is the change from 290 to 228
Calculation steps:
[( 228 - 290 ) ÷ 290] x 100 = -21.38%
Formula
Percentage change = [(228 - 290) / 290] x 100
Subtract the new number by the original number
228 - 290 = -62
-62 ÷ 290 = -0.21379310344827587
-0.21379310344827587 x 100 = -21.38%