276.04% is the change from 217 to 816
Calculation steps:
[( 816 - 217 ) ÷ 217] x 100 = 276.04%
Formula
Percentage change = [(816 - 217) / 217] x 100
Subtract the new number by the original number
816 - 217 = 599
599 ÷ 217 = 2.76036866359447
2.76036866359447 x 100 = 276.04%