0.63% is the change from 315 to 317
Calculation steps:
[( 317 - 315 ) ÷ 315] x 100 = 0.63%
Formula
Percentage change = [(317 - 315) / 315] x 100
Subtract the new number by the original number
317 - 315 = 2
2 ÷ 315 = 0.006349206349206349
0.006349206349206349 x 100 = 0.63%