-28.18% is the change from 291 to 209
Calculation steps:
[( 209 - 291 ) ÷ 291] x 100 = -28.18%
Formula
Percentage change = [(209 - 291) / 291] x 100
Subtract the new number by the original number
209 - 291 = -82
-82 ÷ 291 = -0.281786941580756
-0.281786941580756 x 100 = -28.18%