72.73% is the change from 121 to 209
Calculation steps:
[( 209 - 121 ) ÷ 121] x 100 = 72.73%
Formula
Percentage change = [(209 - 121) / 121] x 100
Subtract the new number by the original number
209 - 121 = 88
88 ÷ 121 = 0.7272727272727273
0.7272727272727273 x 100 = 72.73%