293.12% is the change from 218 to 857
Calculation steps:
[( 857 - 218 ) ÷ 218] x 100 = 293.12%
Formula
Percentage change = [(857 - 218) / 218] x 100
Subtract the new number by the original number
857 - 218 = 639
639 ÷ 218 = 2.9311926605504586
2.9311926605504586 x 100 = 293.12%