81.27% is the change from 315 to 571
Calculation steps:
[( 571 - 315 ) ÷ 315] x 100 = 81.27%
Formula
Percentage change = [(571 - 315) / 315] x 100
Subtract the new number by the original number
571 - 315 = 256
256 ÷ 315 = 0.8126984126984127
0.8126984126984127 x 100 = 81.27%