115.31% is the change from 209 to 450
Calculation steps:
[( 450 - 209 ) ÷ 209] x 100 = 115.31%
Formula
Percentage change = [(450 - 209) / 209] x 100
Subtract the new number by the original number
450 - 209 = 241
241 ÷ 209 = 1.1531100478468899
1.1531100478468899 x 100 = 115.31%