81.73% is the change from 312 to 567
Calculation steps:
[( 567 - 312 ) ÷ 312] x 100 = 81.73%
Formula
Percentage change = [(567 - 312) / 312] x 100
Subtract the new number by the original number
567 - 312 = 255
255 ÷ 312 = 0.8173076923076923
0.8173076923076923 x 100 = 81.73%