249.3% is the change from 215 to 751
Calculation steps:
[( 751 - 215 ) ÷ 215] x 100 = 249.3%
Formula
Percentage change = [(751 - 215) / 215] x 100
Subtract the new number by the original number
751 - 215 = 536
536 ÷ 215 = 2.4930232558139536
2.4930232558139536 x 100 = 249.3%