54.49% is the change from 312 to 482
Calculation steps:
[( 482 - 312 ) ÷ 312] x 100 = 54.49%
Formula
Percentage change = [(482 - 312) / 312] x 100
Subtract the new number by the original number
482 - 312 = 170
170 ÷ 312 = 0.5448717948717948
0.5448717948717948 x 100 = 54.49%