92.78% is the change from 291 to 561
Calculation steps:
[( 561 - 291 ) ÷ 291] x 100 = 92.78%
Formula
Percentage change = [(561 - 291) / 291] x 100
Subtract the new number by the original number
561 - 291 = 270
270 ÷ 291 = 0.9278350515463918
0.9278350515463918 x 100 = 92.78%