24.36% is the change from 312 to 388
Calculation steps:
[( 388 - 312 ) ÷ 312] x 100 = 24.36%
Formula
Percentage change = [(388 - 312) / 312] x 100
Subtract the new number by the original number
388 - 312 = 76
76 ÷ 312 = 0.24358974358974358
0.24358974358974358 x 100 = 24.36%