87.65% is the change from 421 to 790
Calculation steps:
[( 790 - 421 ) ÷ 421] x 100 = 87.65%
Formula
Percentage change = [(790 - 421) / 421] x 100
Subtract the new number by the original number
790 - 421 = 369
369 ÷ 421 = 0.8764845605700713
0.8764845605700713 x 100 = 87.65%