217.05% is the change from 258 to 818
Calculation steps:
[( 818 - 258 ) ÷ 258] x 100 = 217.05%
Formula
Percentage change = [(818 - 258) / 258] x 100
Subtract the new number by the original number
818 - 258 = 560
560 ÷ 258 = 2.1705426356589146
2.1705426356589146 x 100 = 217.05%