342.4% is the change from 217 to 960
Calculation steps:
[( 960 - 217 ) ÷ 217] x 100 = 342.4%
Formula
Percentage change = [(960 - 217) / 217] x 100
Subtract the new number by the original number
960 - 217 = 743
743 ÷ 217 = 3.423963133640553
3.423963133640553 x 100 = 342.4%