51.52% is the change from 561 to 850
Calculation steps:
[( 850 - 561 ) ÷ 561] x 100 = 51.52%
Formula
Percentage change = [(850 - 561) / 561] x 100
Subtract the new number by the original number
850 - 561 = 289
289 ÷ 561 = 0.5151515151515151
0.5151515151515151 x 100 = 51.52%