228.19% is the change from 259 to 850
Calculation steps:
[( 850 - 259 ) ÷ 259] x 100 = 228.19%
Formula
Percentage change = [(850 - 259) / 259] x 100
Subtract the new number by the original number
850 - 259 = 591
591 ÷ 259 = 2.281853281853282
2.281853281853282 x 100 = 228.19%
Example