109.3% is the change from 430 to 900
Calculation steps:
[( 900 - 430 ) ÷ 430] x 100 = 109.3%
Formula
Percentage change = [(900 - 430) / 430] x 100
Subtract the new number by the original number
900 - 430 = 470
470 ÷ 430 = 1.0930232558139534
1.0930232558139534 x 100 = 109.3%