102.61% is the change from 421 to 853
Calculation steps:
[( 853 - 421 ) ÷ 421] x 100 = 102.61%
Formula
Percentage change = [(853 - 421) / 421] x 100
Subtract the new number by the original number
853 - 421 = 432
432 ÷ 421 = 1.0261282660332542
1.0261282660332542 x 100 = 102.61%