38.22% is the change from 225 to 311
Calculation steps:
[( 311 - 225 ) ÷ 225] x 100 = 38.22%
Formula
Percentage change = [(311 - 225) / 225] x 100
Subtract the new number by the original number
311 - 225 = 86
86 ÷ 225 = 0.38222222222222224
0.38222222222222224 x 100 = 38.22%