54.81% is the change from 312 to 483
Calculation steps:
[( 483 - 312 ) ÷ 312] x 100 = 54.81%
Formula
Percentage change = [(483 - 312) / 312] x 100
Subtract the new number by the original number
483 - 312 = 171
171 ÷ 312 = 0.5480769230769231
0.5480769230769231 x 100 = 54.81%