15.44% is the change from 421 to 486
Calculation steps:
[( 486 - 421 ) ÷ 421] x 100 = 15.44%
Formula
Percentage change = [(486 - 421) / 421] x 100
Subtract the new number by the original number
486 - 421 = 65
65 ÷ 421 = 0.1543942992874109
0.1543942992874109 x 100 = 15.44%