34.87% is the change from 238 to 321
Calculation steps:
[( 321 - 238 ) ÷ 238] x 100 = 34.87%
Formula
Percentage change = [(321 - 238) / 238] x 100
Subtract the new number by the original number
321 - 238 = 83
83 ÷ 238 = 0.3487394957983193
0.3487394957983193 x 100 = 34.87%