78.85% is the change from 312 to 558
Calculation steps:
[( 558 - 312 ) ÷ 312] x 100 = 78.85%
Formula
Percentage change = [(558 - 312) / 312] x 100
Subtract the new number by the original number
558 - 312 = 246
246 ÷ 312 = 0.7884615384615384
0.7884615384615384 x 100 = 78.85%