28.96% is the change from 221 to 285
Calculation steps:
[( 285 - 221 ) ÷ 221] x 100 = 28.96%
Formula
Percentage change = [(285 - 221) / 221] x 100
Subtract the new number by the original number
285 - 221 = 64
64 ÷ 221 = 0.2895927601809955
0.2895927601809955 x 100 = 28.96%