21.85% is the change from 421 to 513
Calculation steps:
[( 513 - 421 ) ÷ 421] x 100 = 21.85%
Formula
Percentage change = [(513 - 421) / 421] x 100
Subtract the new number by the original number
513 - 421 = 92
92 ÷ 421 = 0.21852731591448932
0.21852731591448932 x 100 = 21.85%