136.58% is the change from 421 to 996
Calculation steps:
[( 996 - 421 ) ÷ 421] x 100 = 136.58%
Formula
Percentage change = [(996 - 421) / 421] x 100
Subtract the new number by the original number
996 - 421 = 575
575 ÷ 421 = 1.3657957244655583
1.3657957244655583 x 100 = 136.58%