106.6% is the change from 318 to 657
Calculation steps:
[( 657 - 318 ) ÷ 318] x 100 = 106.6%
Formula
Percentage change = [(657 - 318) / 318] x 100
Subtract the new number by the original number
657 - 318 = 339
339 ÷ 318 = 1.0660377358490567
1.0660377358490567 x 100 = 106.6%