217.14% is the change from 315 to 999
Calculation steps:
[( 999 - 315 ) ÷ 315] x 100 = 217.14%
Formula
Percentage change = [(999 - 315) / 315] x 100
Subtract the new number by the original number
999 - 315 = 684
684 ÷ 315 = 2.1714285714285713
2.1714285714285713 x 100 = 217.14%