0.64% is the change from 313 to 315
Calculation steps:
[( 315 - 313 ) ÷ 313] x 100 = 0.64%
Formula
Percentage change = [(315 - 313) / 313] x 100
Subtract the new number by the original number
315 - 313 = 2
2 ÷ 313 = 0.006389776357827476
0.006389776357827476 x 100 = 0.64%