83.04% is the change from 230 to 421
Calculation steps:
[( 421 - 230 ) ÷ 230] x 100 = 83.04%
Formula
Percentage change = [(421 - 230) / 230] x 100
Subtract the new number by the original number
421 - 230 = 191
191 ÷ 230 = 0.8304347826086956
0.8304347826086956 x 100 = 83.04%