104.76% is the change from 315 to 645
Calculation steps:
[( 645 - 315 ) ÷ 315] x 100 = 104.76%
Formula
Percentage change = [(645 - 315) / 315] x 100
Subtract the new number by the original number
645 - 315 = 330
330 ÷ 315 = 1.0476190476190477
1.0476190476190477 x 100 = 104.76%