58.67% is the change from 421 to 668
Calculation steps:
[( 668 - 421 ) ÷ 421] x 100 = 58.67%
Formula
Percentage change = [(668 - 421) / 421] x 100
Subtract the new number by the original number
668 - 421 = 247
247 ÷ 421 = 0.5866983372921615
0.5866983372921615 x 100 = 58.67%