109.09% is the change from 209 to 437
Calculation steps:
[( 437 - 209 ) ÷ 209] x 100 = 109.09%
Formula
Percentage change = [(437 - 209) / 209] x 100
Subtract the new number by the original number
437 - 209 = 228
228 ÷ 209 = 1.0909090909090908
1.0909090909090908 x 100 = 109.09%