129.45% is the change from 421 to 966
Calculation steps:
[( 966 - 421 ) ÷ 421] x 100 = 129.45%
Formula
Percentage change = [(966 - 421) / 421] x 100
Subtract the new number by the original number
966 - 421 = 545
545 ÷ 421 = 1.2945368171021379
1.2945368171021379 x 100 = 129.45%