283.8% is the change from 216 to 829
Calculation steps:
[( 829 - 216 ) ÷ 216] x 100 = 283.8%
Formula
Percentage change = [(829 - 216) / 216] x 100
Subtract the new number by the original number
829 - 216 = 613
613 ÷ 216 = 2.837962962962963
2.837962962962963 x 100 = 283.8%