56.6% is the change from 318 to 498
Calculation steps:
[( 498 - 318 ) ÷ 318] x 100 = 56.6%
Formula
Percentage change = [(498 - 318) / 318] x 100
Subtract the new number by the original number
498 - 318 = 180
180 ÷ 318 = 0.5660377358490566
0.5660377358490566 x 100 = 56.6%