283.1% is the change from 213 to 816
Calculation steps:
[( 816 - 213 ) ÷ 213] x 100 = 283.1%
Formula
Percentage change = [(816 - 213) / 213] x 100
Subtract the new number by the original number
816 - 213 = 603
603 ÷ 213 = 2.8309859154929575
2.8309859154929575 x 100 = 283.1%