47.37% is the change from 209 to 308
Calculation steps:
[( 308 - 209 ) ÷ 209] x 100 = 47.37%
Formula
Percentage change = [(308 - 209) / 209] x 100
Subtract the new number by the original number
308 - 209 = 99
99 ÷ 209 = 0.47368421052631576
0.47368421052631576 x 100 = 47.37%