87.88% is the change from 231 to 434
Calculation steps:
[( 434 - 231 ) ÷ 231] x 100 = 87.88%
Formula
Percentage change = [(434 - 231) / 231] x 100
Subtract the new number by the original number
434 - 231 = 203
203 ÷ 231 = 0.8787878787878788
0.8787878787878788 x 100 = 87.88%