50.09% is the change from 571 to 857
Calculation steps:
[( 857 - 571 ) ÷ 571] x 100 = 50.09%
Formula
Percentage change = [(857 - 571) / 571] x 100
Subtract the new number by the original number
857 - 571 = 286
286 ÷ 571 = 0.500875656742557
0.500875656742557 x 100 = 50.09%