221.46% is the change from 261 to 839
Calculation steps:
[( 839 - 261 ) ÷ 261] x 100 = 221.46%
Formula
Percentage change = [(839 - 261) / 261] x 100
Subtract the new number by the original number
839 - 261 = 578
578 ÷ 261 = 2.21455938697318
2.21455938697318 x 100 = 221.46%