52.63% is the change from 209 to 319
Calculation steps:
[( 319 - 209 ) ÷ 209] x 100 = 52.63%
Formula
Percentage change = [(319 - 209) / 209] x 100
Subtract the new number by the original number
319 - 209 = 110
110 ÷ 209 = 0.5263157894736842
0.5263157894736842 x 100 = 52.63%