82.69% is the change from 312 to 570
Calculation steps:
[( 570 - 312 ) ÷ 312] x 100 = 82.69%
Formula
Percentage change = [(570 - 312) / 312] x 100
Subtract the new number by the original number
570 - 312 = 258
258 ÷ 312 = 0.8269230769230769
0.8269230769230769 x 100 = 82.69%