91.74% is the change from 109 to 209
Calculation steps:
[( 209 - 109 ) ÷ 109] x 100 = 91.74%
Formula
Percentage change = [(209 - 109) / 109] x 100
Subtract the new number by the original number
209 - 109 = 100
100 ÷ 109 = 0.9174311926605505
0.9174311926605505 x 100 = 91.74%