216.99% is the change from 259 to 821
Calculation steps:
[( 821 - 259 ) ÷ 259] x 100 = 216.99%
Formula
Percentage change = [(821 - 259) / 259] x 100
Subtract the new number by the original number
821 - 259 = 562
562 ÷ 259 = 2.16988416988417
2.16988416988417 x 100 = 216.99%