215.44% is the change from 259 to 817
Calculation steps:
[( 817 - 259 ) ÷ 259] x 100 = 215.44%
Formula
Percentage change = [(817 - 259) / 259] x 100
Subtract the new number by the original number
817 - 259 = 558
558 ÷ 259 = 2.1544401544401546
2.1544401544401546 x 100 = 215.44%