93.45% is the change from 290 to 561
Calculation steps:
[( 561 - 290 ) ÷ 290] x 100 = 93.45%
Formula
Percentage change = [(561 - 290) / 290] x 100
Subtract the new number by the original number
561 - 290 = 271
271 ÷ 290 = 0.9344827586206896
0.9344827586206896 x 100 = 93.45%