278.7% is the change from 216 to 818
Calculation steps:
[( 818 - 216 ) ÷ 216] x 100 = 278.7%
Formula
Percentage change = [(818 - 216) / 216] x 100
Subtract the new number by the original number
818 - 216 = 602
602 ÷ 216 = 2.787037037037037
2.787037037037037 x 100 = 278.7%