66.27% is the change from 421 to 700
Calculation steps:
[( 700 - 421 ) ÷ 421] x 100 = 66.27%
Formula
Percentage change = [(700 - 421) / 421] x 100
Subtract the new number by the original number
700 - 421 = 279
279 ÷ 421 = 0.66270783847981
0.66270783847981 x 100 = 66.27%