29.86% is the change from 221 to 287
Calculation steps:
[( 287 - 221 ) ÷ 221] x 100 = 29.86%
Formula
Percentage change = [(287 - 221) / 221] x 100
Subtract the new number by the original number
287 - 221 = 66
66 ÷ 221 = 0.2986425339366516
0.2986425339366516 x 100 = 29.86%