116.15% is the change from 421 to 910
Calculation steps:
[( 910 - 421 ) ÷ 421] x 100 = 116.15%
Formula
Percentage change = [(910 - 421) / 421] x 100
Subtract the new number by the original number
910 - 421 = 489
489 ÷ 421 = 1.161520190023753
1.161520190023753 x 100 = 116.15%