62.47% is the change from 421 to 684
Calculation steps:
[( 684 - 421 ) ÷ 421] x 100 = 62.47%
Formula
Percentage change = [(684 - 421) / 421] x 100
Subtract the new number by the original number
684 - 421 = 263
263 ÷ 421 = 0.6247030878859857
0.6247030878859857 x 100 = 62.47%