209.52% is the change from 315 to 975
Calculation steps:
[( 975 - 315 ) ÷ 315] x 100 = 209.52%
Formula
Percentage change = [(975 - 315) / 315] x 100
Subtract the new number by the original number
975 - 315 = 660
660 ÷ 315 = 2.0952380952380953
2.0952380952380953 x 100 = 209.52%