85.28% is the change from 231 to 428
Calculation steps:
[( 428 - 231 ) ÷ 231] x 100 = 85.28%
Formula
Percentage change = [(428 - 231) / 231] x 100
Subtract the new number by the original number
428 - 231 = 197
197 ÷ 231 = 0.8528138528138528
0.8528138528138528 x 100 = 85.28%