83.01% is the change from 312 to 571
Calculation steps:
[( 571 - 312 ) ÷ 312] x 100 = 83.01%
Formula
Percentage change = [(571 - 312) / 312] x 100
Subtract the new number by the original number
571 - 312 = 259
259 ÷ 312 = 0.8301282051282052
0.8301282051282052 x 100 = 83.01%