54.6% is the change from 315 to 487
Calculation steps:
[( 487 - 315 ) ÷ 315] x 100 = 54.6%
Formula
Percentage change = [(487 - 315) / 315] x 100
Subtract the new number by the original number
487 - 315 = 172
172 ÷ 315 = 0.546031746031746
0.546031746031746 x 100 = 54.6%