38.01% is the change from 221 to 305
Calculation steps:
[( 305 - 221 ) ÷ 221] x 100 = 38.01%
Formula
Percentage change = [(305 - 221) / 221] x 100
Subtract the new number by the original number
305 - 221 = 84
84 ÷ 221 = 0.38009049773755654
0.38009049773755654 x 100 = 38.01%