304.61% is the change from 217 to 878
Calculation steps:
[( 878 - 217 ) ÷ 217] x 100 = 304.61%
Formula
Percentage change = [(878 - 217) / 217] x 100
Subtract the new number by the original number
878 - 217 = 661
661 ÷ 217 = 3.046082949308756
3.046082949308756 x 100 = 304.61%