294.01% is the change from 217 to 855
Calculation steps:
[( 855 - 217 ) ÷ 217] x 100 = 294.01%
Formula
Percentage change = [(855 - 217) / 217] x 100
Subtract the new number by the original number
855 - 217 = 638
638 ÷ 217 = 2.9400921658986174
2.9400921658986174 x 100 = 294.01%