241.4% is the change from 215 to 734
Calculation steps:
[( 734 - 215 ) ÷ 215] x 100 = 241.4%
Formula
Percentage change = [(734 - 215) / 215] x 100
Subtract the new number by the original number
734 - 215 = 519
519 ÷ 215 = 2.4139534883720932
2.4139534883720932 x 100 = 241.4%