302.3% is the change from 217 to 873
Calculation steps:
[( 873 - 217 ) ÷ 217] x 100 = 302.3%
Formula
Percentage change = [(873 - 217) / 217] x 100
Subtract the new number by the original number
873 - 217 = 656
656 ÷ 217 = 3.0230414746543777
3.0230414746543777 x 100 = 302.3%