80.77% is the change from 312 to 564
Calculation steps:
[( 564 - 312 ) ÷ 312] x 100 = 80.77%
Formula
Percentage change = [(564 - 312) / 312] x 100
Subtract the new number by the original number
564 - 312 = 252
252 ÷ 312 = 0.8076923076923077
0.8076923076923077 x 100 = 80.77%