22.94% is the change from 231 to 284
Calculation steps:
[( 284 - 231 ) ÷ 231] x 100 = 22.94%
Formula
Percentage change = [(284 - 231) / 231] x 100
Subtract the new number by the original number
284 - 231 = 53
53 ÷ 231 = 0.22943722943722944
0.22943722943722944 x 100 = 22.94%