33.97% is the change from 156 to 209
Calculation steps:
[( 209 - 156 ) ÷ 156] x 100 = 33.97%
Formula
Percentage change = [(209 - 156) / 156] x 100
Subtract the new number by the original number
209 - 156 = 53
53 ÷ 156 = 0.33974358974358976
0.33974358974358976 x 100 = 33.97%