87.18% is the change from 234 to 438
Calculation steps:
[( 438 - 234 ) ÷ 234] x 100 = 87.18%
Formula
Percentage change = [(438 - 234) / 234] x 100
Subtract the new number by the original number
438 - 234 = 204
204 ÷ 234 = 0.8717948717948718
0.8717948717948718 x 100 = 87.18%