285.38% is the change from 212 to 817
Calculation steps:
[( 817 - 212 ) ÷ 212] x 100 = 285.38%
Formula
Percentage change = [(817 - 212) / 212] x 100
Subtract the new number by the original number
817 - 212 = 605
605 ÷ 212 = 2.8537735849056602
2.8537735849056602 x 100 = 285.38%