163.78% is the change from 312 to 823
Calculation steps:
[( 823 - 312 ) ÷ 312] x 100 = 163.78%
Formula
Percentage change = [(823 - 312) / 312] x 100
Subtract the new number by the original number
823 - 312 = 511
511 ÷ 312 = 1.6378205128205128
1.6378205128205128 x 100 = 163.78%